C day 9/9/16 1. turn in science tweet

C day 9/9/16 1. turn in science tweet
2. take out planner, write down homework 3. pick up homework on side table 4. open up blue note packet

Introduction to Science and Measurement
Ms. Pici,

Name the following equipment

What is Science Science is the study of ….
Physical Science is a combination of physics and chemistry Technology is using science to make products that make life easier So how are science and technology related? EX. superclip

Phones : old vs. new technology What concepts are involved?

9-12-16 Pick up your homework on the side table
Write down your homework in your agenda Answer the question of the day: Explain how and why observations are important in the field of science.

Trains how have they changed?
Trains prezi

Mystery Footprints Observation & Inference
To save this ppt - click on “File” then “Make a Copy” or “Download as” and choose the format you would like. Please do not request editing access to this file - that would change my version of this slide show. Image Source: Modified by Liz LaRosa , from original posted at: Modified by Liz LaRosa , from original posted at:

What does the word “observation” mean in science?

Observations Any information collected with the senses.
The skill of describing scientific events Quantitative – measurable or countable 3 meters long 4 marbles 50 kilograms 35 degrees Celsius Qualitative – described, not measured red flowers smells like fresh baked cookies tastes bitter

What does the word “inference” mean in science?

Inference Conclusions or deductions based on observations
The process of drawing a conclusion from given evidence Practice: You will close your eyes and quietly listen to 3 observations After the observations have been shared, write down your inference into your notes Do not share your inference until asked to do so

Inference Practice: Close your eyes and listen to the following observations: Open your eyes Inference: Write down your inference, but do not share it with anyone yet I hear people screaming I smell cotton candy, popcorn, and hamburgers I see a lot of people

What was your inference & why?
Amusement Park Share and Discuss Day at the Beach Sporting Event Something else?

Mystery Footprints You will be asked to view a series of 3 images.
Record 3 observations and 1 inference for each image. Do not share your observations or inferences until asked to do so.

Image 1 Record 3 OBSERVATIONS Make an INFERENCE Share and Discuss

Image 2 Record 3 OBSERVATIONS Make an INFERENCE Share and Discuss

Image 3 Share and Discuss Record 3 OBSERVATIONS Make an INFERENCE

Discussion Questions What event happened to cause these tracks? What is your hypothesis? How do your observations support your hypothesis? As a class, were there similarities/differences in our observations? In our inferences? Why was it important not to share our observations and inferences right away? Can your answers influence others? Can we know, with 100% certainty, how these footprints were formed? Why/Why not?

This book can be downloaded for free at:
Source of footprints graphic: as of 8/4/15 Chapter 6: Activities for Teaching About Evolution and the Nature of Science."Teaching About Evolution and the Nature of Science. Washington, DC: The National Academies Press, 1998. This book can be downloaded for free at:

Turn in Past present future to the front table, DO NOT touch the puzzles Take out blue note packet Pick up SM homework/ elephant poem Question of the day on your whiteboard with your partner: What are the steps to the scientific method

Scientific Method What is it used for?

The scientific method is used to solve problems
What are some problems that scientists might have? What are some problems Ms. Pici may have? What are the steps of the Scientific method?

Steps in the Scientific Method
Identify the problem Research Hypothesis Experiment Observation/Data Collection Conclusion Accept, reject, change Communicate

9-14-16 F day, IT’S NATIONAL FIELD HOCKEY DAY 
Turn in all homework assignments into the front table Take out a piece of paper put your name on it and wait quietly for your quiz! Pick up puzzle lab and numbered card PLEASE DO NOT RUIN MY CARDS!! (do not bend. Poke holes in them, etc)

Quiz First Wednesday quiz 9-14-15
Please take out a separate piece of paper and answer the following questions: 1. How are science and technology related? 2. Give an example of a technology that has changed over the years and briefly describe how it has changed. 3.Explain what is the difference between and observation and inference? 4. Explain the difference between qualitative and quantitative observations. Give an example of each using a sentence

Pick up papers Take out note packet Turn in lab

Observations Gathered through your senses
A scientist notices something in their natural world

Observations An example of an observation might be noticing that many salamanders near a pond have curved, not straight, tails

Hypothesis A suggested solution to the problem. Must be testable
Sometimes written as If…Then… statements Predicts an outcome

Hypothesis An example of a hypothesis might be that the salamanders have curved tails due to a pollutant in the moist soil where they live.

A procedure to test the hypothesis.
Experiment A procedure to test the hypothesis.

Variable – factor in the experiment that is being tested

A good or “valid” experiment will only have ONE variable!

Scientific Experiments Follow Rules
An experimenter changes one factor and observes or measures what happens.

The Control Variable The experimenter makes a special effort to keep other factors constant so that they will not effect the outcome. Those factors are called control variables.

What is the Purpose of a Control?
Controls are NOT being tested Controls are used for COMPARISON

Other Variables The factor that is changed is known as the independent variable. The factor that is measured or observed is called the dependent variable.

Example of Controls & Variables
For example, suppose you want to figure out the fastest route to walk home from school. You will try several different routes and time how long it takes you to get home by each one. Since you are only interested in finding a route that is fastest for you, you will do the walking yourself.

What are the Variables in Your Experiment?
Varying the route is the independent variable The time it takes is the dependent variable Keeping the same walker throughout makes the walker a control variable.

One more thing… it is best to make several trials with each independent variable.

Valid Experiments

Remember: To be a Valid Experiment:
Two groups are required -- - the control & experimental groups There should be only one variable

Data Results of the experiment
May be quantitative (numbers) or qualitative

Data Must be organized Can be organized into charts, tables, or graphs

Conclusion The answer to the hypothesis based on the data obtained from the experiment

In order to verify the results, experiments must be retested.

Solving a Problem 1)Identify a Problem
2) State Observations about the problem 3) Form a Hypothesis about the problem (if…then…) 4) Design an Experiment to test the hypothesis 5) Collect Data 6) Form a Conclusion 7) Retest

How do you visualize these steps? Draw them in your notes…

The Scientist A researcher is developing a treatment for cancer

Problem: cancer: How do I cure cancer?
The scientist Problem: cancer: How do I cure cancer?

She looks at the results of the previous treatments and sees what didn’t work

Getting the information
Research Getting the information

A crème is produced to apply to the tumor

Hypothesis The crème will work

She gets three patients with similar cancer and applies the crème

She’s testing it (the crème)
Experiment She’s testing it (the crème)

She measures the tumor over 4 weeks and records her data

Observation She’s collecting data

From the data, she notices a significant decrease in the size of the tumor

Conclusion The crème works!

She believes the crème caused the tumor to shrink

Accept/ reject/ change

She shares her research with the pharmaceutical company so the crème can be manufactured and used on a larger population of cancer patients

Communicate She shares her results

The average person

A student walks into the cafeteria and needs to buy lunch

problem What to buy!

She looks at the choices that are offered

research Seeing what is offered

The student picks the taco surprise

The taco surprise will be good
Hypothesis The taco surprise will be good

She begins to eat it

Experiment She’s trying it

She smells it, tastes it, and touches it

observation She uses her senses

She decides it’s a surprise alright …and not a very pleasant one

She did not like the taco
Conclusion She did not like the taco

She makes a note to self that taco surprise is not a good choice

Accept, reject, change REJECT

She throws most of the taco out and tells her friends it was NOT good

Communicate Tells friends about it

9-16-16 Pick up the sheets on the table Turn in your tweet
Go to the station you left off on with your lab packet and poem

9-19-16 Turn in Cut and paste activity
Take out krabby patty/ Simpsons worksheets and note packet Write down homework, how can a casual question be answered?

How do I set up an experiment?!?!?
Experimental Design How do I set up an experiment?!?!?

Read the notes in your packet
Highlight the key words and underline key definitions

Variables in an Experiment
Independent Variables(manipulated) Dependent Variables(responding) Controls (constants)

Variables Variables are factors that can be changed in an experiment.
Associations: “very able” like x in math Reliable experiments attempt to change only one variable in an experiment.

Independent Variable (manipulated)
What we change to see what happens Associations: CAUSE

Dependent variable (responding)
Definition: What happens because of the change Association: EFFECT

Control (constants) Definition : DOES NOT CHANGE
Associations: so it doesn’t mess up the experiment

How does I affect D ?

Variables in Science Experiments
What makes an experiment “fair”? Investigating Evidence Copyright 2015

Variables Variable - something that is changed
Constant (or control) - something that does not change When can temperature be a variable? (Testing if something – like the activity levels of bees - changes when temperatures go up or down.) When can temperature be a constant? (If we want to know which bird feeder is preferred, we want to keep the temperatures the same during the experiment.)

Science experiments use...
Independent Variable the one factor that is changed by the person doing the experiment Dependent Variable the factor which is measured in the experiment Constants/Controls All the factors that stay the same in an experiment To keep an experiment fair, we want to keep a close eye on variables and constants. You can remember the difference between independent and dependent variables with this trick: The dependent variable DEPENDS on the independent variable. Be sure to keep the constants as controlled as possible in your experiments. In the last picture, what might be going on that could affect your results? (sounds near the road versus sounds near the stream, shade versus sun, grass versus pavement)

A birdy example... Imagine you want to see what color of bird feeder your local birds prefer. Green? Red? Blue? Let’s take a look at a more specific example: If a student wanted to determine whether feeder color has an effect, he might suggest, “If I put up red, blue, and green feeders, birds will visit the green feeder more” as a hypothesis. He might speculate that the green feeder, being the most “camouflaged” or “natural,” might be visited the most. If a student wanted to determine whether feeder color has an effect, he might suggest, “if I put up a red, blue, and green feeder, birds will visit the green feeder more” as a hypothesis. He might speculate that the green feeder, being the most “camouflaged” or “natural” might be visited the most.

Our Constants and Variables
Independent Variable - color of the feeders Dependent Variable - amount of seed eaten Constants - everything else that is kept the same Location of feeders Kind of feeder used Putting feeders out at the same time Independent Variable: the one factor that is changed by the person doing the experiment Dependent Variable: the factor which is measured in the experiment Constants: all the factors that stay the same in an experiment

Our Experimental Design
CONSTANTS Location of feeders Kind of seed Type of feeder INDEPENDENT VARIABLE Red Blue Green DEPENDENT VARIABLE Amount of Seed Eaten This chart shows the variables and constants within our birdy example. We keep the constants the same for all three colors of feeders. The only thing we are changing is the color of feeder. So color of feeder is our independent variable. The amount of seed eaten will be measured and is called our dependent variable.

If everything except the independent variable is held constant, we can say...
The experiment is FAIR. REMEMBER: Only the independent variable can change! In our example, only the color of feeder can change. A FAIR experiment means the information gathered is reliable.

Why is it important to change only the independent variable
? ? ? Collect answers… You can re-phrase the question and/or ask additional questions: What might happen if we change more than the independent variable? Will our results be accurate if we hang some feeders in the sun and others in the shade? What if we hang them from the same tree branch, but on different days?

If you don't... If you measure a change in the dependent variable, you won't know whether it is the independent variable that is causing the change. Independent Variable Give an example: A girl wanted to know whether her dog scared birds away when it was in the backyard. She thought it would, because the dog likes to bark a lot and has been known to chase little animals. For 5 days when the dog was out, she counted for an hour. For 5 days the dog wasn’t out, she counted for an hour. After she collected the data, she noticed that birds are actually out MORE when the dog is in the yard. Does that surprise you? But, what the girl didn’t think of was other things that might effect the number of birds that were out. She began thinking that maybe something else might be going on. She realized that the dog was out on sunny warm days, and not on rainy, cool days. So, even though she found a change, how would she know if it was the dog that caused an effect? Or was it the weather? See if students can suggest improvements to the experiment, (i.e. making sure the weather and temperature are similar on the days she counts).

Is Sam's experiment fair?
YES or NO No! It isn’t fair since the locations of the feeders were very different. Read the following scenario to the students: Sam wants to know if birds prefer one color of feeder to another. He takes three feeders and paints one red, one blue, and one green. He fills the feeders with the same amount of sunflower seed, and plans to keep the feeders out for one week before measuring how much seed is eaten out of each. On Tuesday, he puts each of the feeders in his back yard: the red feeder in a pine tree, the green feeder on a metal pole in the center of the yard, and the blue one in a small bushy tree. Is Sam’s experiment fair?

Is Maria's experiment fair?
YES or NO YES! It seems fair since Maria only changed the feeder color. Read the following scenario to the students: Maria wants to know if birds prefer one color of feeder to another. She makes three feeders out of 2-liter bottles and paints one red, one blue, and one green. She fills each of the feeders with the same amount of mixed birdseed, and plans to keep the feeders out for 10 days before measuring how much seed is eaten from each feeder. She puts each of the feeders in the school courtyard in a small tree, hanging each at the same height. Does Maria’s experiment seem fair? Read the following scenario to the students: Maria wants to know if birds prefer one color of feeder to another. She makes three feeders out of wood and paints one red, one blue, and one green. She fills each of the feeders with the same amount of mixed birdseed, and plans to keep the feeders out for 10 days before measuring how much seed is eaten from each feeder. She puts each of the feeders in the school courtyard in a small tree, hanging each at the same height. Does Maria’s experiment seem fair?

Is Jessie's experiment fair?
YES or NO NO! It isn't fair since the feeders are not out at the same time and the weather is different. Read the following scenario to the students: Jessie wants to know if birds prefer one color of feeder to another. She makes three feeders out of 2-liter bottles and paints one red, one blue, and one green. She fills the each of the feeders with sunflower seed. She plans to leave each feeder out for 2 days and then measure the amount of seed that the birds ate. She has one hook in her backyard the she plans to hang each of the feeders on. She puts the red feeder out on Tuesday and measures the seed 2 days later, the green feeder doesn’t go out until Saturday since it was very snowy, but she is able to measure the seed 2 days later. The weather turned rainy, but she needs to finish her experiment, so blue feeder goes out on Monday and is measured 2 days later. Is Jessie’s experiment fair? Read the following scenario to the students: Jessie wants to know if birds prefer one color of feeder to another. She buys three feeders and paints one red, one blue, and one green. She fills each of the feeders with sunflower seed. She plans to leave each feeder out for 2 days and then measure the amount of seed that the birds have eaten. She has one hook in her backyard that she plans to hang each of the feeders on. She puts the red feeder out on Tuesday and measures the seed 2 days later. The green feeder doesn’t go out until Saturday since it was very snowy, but she is able to measure the seed 2 days later. The weather turned rainy, but she needs to finish her experiment, so the blue feeder goes out on Monday and is measured 2 days later. Is Jessie’s experiment fair?

What do you think? Terry loves birds and wants to see as many as she can in her yard. She wants to know whether she is wasting money buying an expensive mixed seed. She wonders... Will the expensive seed attract more birds to her back yard? How would you to advise her to find out if the expensive seed is better? You may want to have students brainstorm in pairs, or conduct a group discussion. You may want to have students brainstorm in pairs, or conduct a group discussion. Cardinal photo by Stephen A. Wolfe - Hummingbird photo by Eric Kilby -

Terry's Experimental Design
Independent Variable ? Dependent Variable Constants Ask students: What is the independent variable? What is the dependent variable? What would you hold constant? What is the Independent Variable? What is the Dependent Variable? What would you hold constant? 107

Terry's Experimental Design
Independent Variable Kind of seed: Expensive or Cheap Dependent Variable Number (and perhaps kinds) of birds that visit Constants Location of feeders Type of feeder How seed is measured How birds are counted What is the independent variable? Expensive or cheap seed What is the dependent variable? Number of birds– also, you may want to record what KINDS visit. Maybe diversity is higher with one seed or the other! What would you hold constant? There are other answers as well. Feel free to add to the list. What is the Independent Variable? What is the Dependent Variable? Number of birds– also, you may want to record what KINDS visit. Maybe diversity is higher with one seed or the other! What would you hold constant? There are other answers as well. Feel free to add to the list 108

What experiments are you planning?
What are your variables? How will you keep your experiment fair?

Pick up papers Do NOT turn in HW…keep out I will check to see if it’s done Get a pair of goggles from bookcase by the window Write homework down….tomorrow is quiz day! Exp. design homework

9-21-16 Pick up papers Put everything away
Take out a pencil for your quiz Take out your homework we will go over it quickly before the quiz You will have 10 mins to complete the quiz then we will be doing a lab on Mobius strips

CIGARETTE SMOKING INCREASES THE RISK OF LUNG CANCER

HOW DOES CIGARETTE SMOKING AFFECT RISK OF LUNG CANCER
HYPOTHESIS: If I smoke cigarettes, then I will the risk of lung cancer increases. INDEPENDENT: Smoking cigarettes DEPENDENT: Risk of lung cancer CONTROLS: brand of cigaretter # of cigarettes smoked per day

EATING BREAKFAST INCREASES PERFORMANCE IN SCHOOL.

HOW DOES EATING BREAKFAST AFFECT PERFORMANCE IN SCHOOL
HYPOTHESIS: If I eat breakfast, then I will do better in school. INDEPENDENT: Eating breakfast DEPENDENT: Performance in school CONTROLS: time of breakfast type of breakfast

HUMMINGBIRDS ARE ATTRACTED TO THE COLOR RED

HOW DOES THE COLOR RED AFFECT HUMMINGBIRD ATTRACTION
HYPOTHESIS: If I use red, then hummingbirds will be attracted to it. INDEPENDENT: color red DEPENDENT: hummingbird attraction CONTROLS: time of day location

HOMEWORK MAKES YOUR BRAIN FRIED.

HOW DOES HOMEWORK AFFECT HOW FRIED YOUR BRAIN IS.
HYPOTHESIS: If I do homework, then my brain will fry. INDEPENDENT: homework DEPENDENT: brain friedness CONTROLS: length doing it type of homework

GLOWSTICKS LAST LONGER WHEN REFRIGERATED

HOW DOES REFRIGERATING GLOWSTICKS AFFECT HOW LONG THEY LAST
HYPOTHESIS: If I refrigerate a glowstick, then it will last longer. INDEPENDENT: Refrigeration DEPENDENT: Glow length CONTROLS: type of glowstick time in refrigerator

PLANTS GROW BEST IN WHITE LIGHT.

HOW DOES WHITE LIGHT AFFECT PLANT GROWTH.
HYPOTHESIS: If I use white light, then a plant will grow better. INDEPENDENT: White light DEPENDENT: Plant growth CONTROLS: time in light type of plant

THE DEER POPULATION DECREASES IN WINTER DUE TO LACK OF FOOD.

HOW DOES LACK OF FOOD AFFECT DEER POPULATION.
HYPOTHESIS: If there is no food, then the deer population will decrease. INDEPENDENT: Lack of food DEPENDENT: Deer population CONTROLS: season type of deer

STUDENTS WHO STUDY PERFORM BETTER ON TESTS.

HOW DOES STUDYING AFFECT PERFORMANCE ON TESTS
HYPOTHESIS: If I study, then I will do better on tests. INDEPENDENT: Studying DEPENDENT: Performance on tests CONTROLS: time of studying type of test

What is a Mobius strip? LAB

9-22-16 Turn in Mobius strip lab
Pick up papers on side table, get a ruler from the bins Smile  it’s Thursday!!!!! We’re almost there!!!

Nasa Video

Ms. Pici loves Hot Cocoa, so that’s how she graphs!

Graphing Dependent and Independent Variables
Y axis **Remember Dry Mix Dependent Variable (responding) X axis Independent Variable (manipulated )

Using the data for your class we will create a graph for our data for the PlopPlop fizz fizz lab

9-26-16 B Day Pick up the rounding sheets
Turn in lab –height of bounce Take out a pencil and write down your homework in your agenda Pick up any graded work from the basket in the back

Why do we round? White board with your partner some reasons why we round in our daily lives. How does rounding help us? How can rounding hinder us?

Rounding Rules How to Round Numbers
Decide which is the last digit to keep Leave it the same if the next digit is less than 5 (this is called rounding down) But increase it by 1 if the next digit is 5 or more (this is called rounding up)

Rules of rounding Why does 5 go up ?
5 is in the middle ... so we could go up or down. But we need a method that everyone agrees to. So think about sport: we should have the same number of players on each team, right? And that is the "common" method of rounding 0,1,2,3 and 4 are on team "down" 5,6,7,8 and 9 are on team "up"

Rules of rounding First work out which number will be left when we finish. Rounding to tenths means to leave one number after the decimal point. Rounding to hundredths means to leave two numbers after the decimal point. etc rounded to hundredths is 3.14 as the next digit (1) is less than 5 rounded to thousandths is 3.142

as the next digit (6) is more than 5
rounded to tenths is 1.3 as the next digit (7) is 5 or more To round to "so many decimal places" count that many digits from the decimal point: rounded to 3 decimal places is 1.274 as the next digit (5) is 5 or more

it’s TACO TUESDAY!!! Take out your rounding HW- we will go over it quickly Pick up lab –DO NOT TOUCH THE SUPPLIES ON THE BACK TABLE Do the lab in pencil This lab will be worth 51 points…you are to follow the instructions but collect the data on your own…. You will be in groups of 4-5 students

9-28-16 Anything you do not finish is homework!!!
Take out a pencil to write with for your quiz. You will have 10 mins to take your quiz- questions are extra credit 30 mins to finish your lab afterwards Anything you do not finish is homework!!!

9-29-16 Pick up the measurement packet Turn In your homework
Take out your note packet

Measurement

Bill Nye %20measurement

What system of measurement is used in science ?

Why? Scientists need to be able to share information worldwide
Metric! Why? Scientists need to be able to share information worldwide

What are two sources of error for any measurement ?

Human and mechanical/ equipment errors

How to use a Metric Ruler

LINEAR L Definition Equipment Formula/Label Example Linear
Definition Equipment Formula/Label Example Linear Length of a line Ruler cm, mm 1.0 cm 10 mm Perimeter Distance around the outside of the object P = S + S + S… Area Surface space inside A = L x W cm², mm² L W Volume of regular Solid Amount of space an object takes up V = L x W x H cm³, mm³ H L

Metric Ruler There are 2 units that we are going to talk about when we are using a simple metric ruler: the centimeter (cm) and the millimeter (mm).

Metric Ruler cm 1 A centimeter is divided into ten equal pieces. Each piece is 1/10th of a cm. Each piece is called a mm.

Centimeter Ruler .1 .2 .3 .4 .6 .7 .8 .9 .5 cm 1

Centimeter Ruler .1 .2 .3 .4 .6 .7 .8 .9 1.1 1.2 1.3 1.4 1.6 1.7 1.8 1.9 cm .5 1.5 1 2

Larger Measurements If I want to measure something larger, I would use a meterstick. 1 meter = 100 cm = 1,000 mm Notice that the metric system is based on the number 10!

Give each measurement to the nearest tenth of a cm.
1 2 3 4 5 1 2 3

Metric Measurement Quiz - Answers

LINEAR L Definition Equipment Formula/Label Example Linear

Pick up papers Turn in tweet Take out notes and open to page 7

LINEAR Area Surface space inside A = L x W cm², mm² LXW Perimeter
Definition Equipment Formula/Label Example Linear Length of a line Ruler cm, mm 1.0 cm 10 mm Perimeter Distance around the outside of the object P = S + S + S… Area Surface space inside A = L x W cm², mm² LXW Volume of regular Solid Amount of space an object takes up V = L x W x H cm³, mm³ L W H L

Perimeter and Area Video
=perimeter+and+area+in+real+life&view=detail&mid=A B48C6E745ECA B48C6E745EC&FORM=VRDGAR

10-3-16 Take out your homework
Pick up an index card and white piece of paper and 2 pieces of construction paper different colors from the front table I will be around to check your homework

Creation figure Please put your name on the white piece of paper and the index card

Perimeter and Area creation figure
You will create a 4 equal sided figure for area out of construction paper You must label each side 1-4 and calculate the area of your figure on one side of your index card Glue your figure onto the piece of white paper

Perimeter You will create a shape that must have more than 5 sides but less than 9 Each side can be a different length, label each side with a number Glue the figure onto the piece of white paper Calculate the perimeter for the figure you created and put the work on the opposite side of your index card

WHAT to turn in The piece of white paper with an area and perimeter figure on it The index card must be paper clipped to your white piece of paper

Please take out your visualizing vocabulary sheet to be checked Pick up a sheet of WHITE paper and GREEN paper, and index card You will need scissors and a ruler Wait for instructions

LINEAR Volume of regular Solid V = L x W x H cm³, mm³

10-5-16 Pick up a sheet by the door
Put everything away and take out a calculator, pencil and ruler for your quiz

Quiz Directions 1.Once you receive a quiz PUT YOUR NAME in the RIGHT hand corner and circle it 2. Measure all the lines to the nearest tenth of cm. Calculate the Perimeter for the Perimeter figure all answers must have the formula sub in and correct label 3. Calculate the area for the area figure to the nearest tenth of a cm. all answers must have the formula sub in and correct label 4. At the bottom of the area figure define: perimeter and area and give a real life example of each. 5. Once you finish your quiz find the correct answer sheet for your quiz and staple it to your quiz and turn it in 6. Wait patiently and quietly until all students are finished!!!

10-6 Grab a cup of cubes from the back and take out the packet from yesterday- volume of a regular solid. Pick up FICSA/ TICSA lab Get quiz from the graded work bin

10-7-16 Take out FICSA/ TICSA Lab Pick up a cup from the back
Take out two different colored pencils there are some in the back and the front TURN IN TWEET #5 to front table

Take our your lab packet, we are going to finish our lab today, turn in any work you need to turn in. HW: Study for your quiz tomorrow

Choose one of following, and write 5 sentences about how this statement relates to surface area. Must be on a separate piece of paper A person can lay flat on a bed of nails and not get pierced, but if you stepped on a single nail, it would pierce your foot. Why would it take longer for a glass of water to evaporate completely than a puddle of water It is harder to balance on one foot, than it is two. It is more effective to use powdered chlorine in our pool, than to use tablets.

10-13-16 Take out a piece of paper for your quiz
Turn in FCSA/ TICSA if you have not done so already, take out volume of a liquid lab Homework: science tweet #6, Crow and pitcher reading

Quiz On a separate piece of paper calculate the volume of this object:

Volume https://www.youtube.com/watch?v=8oDbwrfz3OQ
Volume of a regular prism ail&mid=0FE3C46AE379536A6C680FE3C46AE379536A6C68&rvsmid=65DA8BA 402C2EC DA8BA402C2EC353726&fsscr=0&FORM=VDFSRV

Define MENISCUS: Dip (curve) in liquid (due to surface tension).
RULE: Flat surface, read from bottom of dip at eye level.

Turn in tweet Take out crow and pitcher to be checked and we will go over it at the end of class Finish the volume of a liquid lab with your partner you will have 20 mins then turn it in to be checked !!!!

After watching the water crawl up the paper towel and the “string trick”, explain what cohesion (surface tension) and capillarity are in your own words. COHESION: Water molecules “stick” to each other. CAPILLARITY: Ability of water to move upward.

VOLUME DEFINITION EQUIPMENT/ TECHNIQUE LABEL EXAMPLE LIQUID VOLUME
DEFINITION EQUIPMENT/ TECHNIQUE LABEL EXAMPLE LIQUID VOLUME Amount of space a liquid takes up. Graduated Cylinder ml, cm³, cc, L water takes up space VOLUME BY FLUID DISPLACEMENT Amount of liquid raised to equal volume of an object. - fill - record - add object - subtract ml cm³ cc Before After Object was added

Volume by displacement

What is Volume Volume is defined as the amount of space taken up by a three-dimensional object.

Volume often refers to liquid volume, which is defined as the amount of space taken up by a liquid, which spreads completely to fill its container.

Volume of Liquids Reading a Meniscus

Measuring Volume by Displacement
Used for irregular shaped objects Select a graduated cylinder large enough to put the object in Add water - at least 10 mL and record accurately

SLOWLY add the object to be measured:rubber stopper
slug metal cylinder Read the new level of the water The water will rise an amount equal to the volume of the object

What not to do

Here’s what the cylinder should look like

Do the math 1 . Original reading of volume Final volume of water
This will equal the volume of the object 22.5 mL mL = 5.1 mL Therefore, the volume of the object by displacement is 5.1 mL

A penny is a flat cylinder – could calculate the volume by direct measurement.

Value of Error in Minting Pennies
9/18/ :06 AM Value of Error in Minting Pennies How close the individual volumes are to each other Calculate as follows % error = average volume - actual volume actual volume % error = error in minting the pennies The smaller the %error, the better the precision in making of the pennies. 194

Example: % error in minting pennies = average volume - actual volume
% error in minting pennies = 1.2g g g = X 100% = 14 % So there is a 14% error in minting of these particular pennies 195

When are Equal Volumes Not Equal? 100mL 250mL 250 mL

Procedure Measure level of water as each “equivalent volume” is added.
Ruler “equivalent volume” Measure level of water as each “equivalent volume” is added.

Paper clip trick

10-18-16 Pick up papers on the side table.
The packet is homework due tomorrow.. Along with a blog post due thursday Quiz tomorrow on volume PICK UP TWEETS from the graded work basket …check the front table for no name tweets to claim

10-19-16 : Volume of irregularly shaped solids
Have your homework out so I can check that you completed it and we will go over it. Take out a pencil for your quiz We will take the quiz then finish the lab. It’s GAME DAY

10-20-16 Pick up sheets on table
Blog post is due by the end of the day Science tweet due Friday visualizing vocab due Monday

White board question What is the difference between Mass and weight?
What would be the same or different on the moon (mass or weight)?

A 10 ml cylinder goes up by: 0.2ml
A 10 ml cylinder goes up by: 0.2ml A 100 ml cylinder goes up by: 1ml (1.0ml) A 250 ml cylinder goes up by: 2ml (2.0ml)

Weight vs Mass https://www.youtube.com/watch?v=gjfLI7aJKmQ

MASS Definition Equipment/ Technique Label Example SOLID MASS
Definition Equipment/ Technique Label Example SOLID MASS Amount of matter (molecules) in an object Balance grams (g) MASS OF A LIQUID Amount of matter in a liquid Ex: H₂O vs. alcohol - Mass empty - Mass full - Subtract MASS

10-21-16 Turn in tweets if you have not done so
Complete visualizing vocabulary for Monday Take out note packet

Let’s say you needed to find the mass of your cat for the vet, but the cat won’t get on the scale. What COULD you do?

Mass yourself; pick cat up; mass both; subtract

What is TARE WEIGHT? Weight (mass) of container
What do you do with the tare weight when you find it? Subtract it out

Compare/contrast MASS vs. WEIGHT
An amount of matter (molecules) an object contents Triple Beam Balance grams (g) WEIGHT Pull of gravity on an object Spring Scale Newtons (N) DEFINITION EQUIPMENT LABEL

WHAT IS THE BIGGEST DIFFERENCE BETWEEN MASS AND WEIGHT?
Mass is constant, weight can change because it is based on gravity.

Pull of gravity on an object
WEIGHT Definition Equipment Label Example WEIGHT Pull of gravity on an object Spring Scale Newtons (N)

10-21-16 Pick up papers on side table Grab graded quiz Mass lab today
Pass back graded quizzes Tweet number 7 due tomorrow

10-24-16 Turn in visualizing vocab to front table and lab
if you did not finish it take out mass of solids lab. IT’s PLAYOFF TIME!!!! I will not be here periods after 6th period, if you have a question on the homework/ studying for your quiz please me.

10-25-16 Please turn in your lab Keep your homework out to be checked
Pick up mass of liquids lab on the side table HW: study for quiz tomorrow

Pick up transition words sheet and index card

Quiz 1. On the back lists the steps needed in order to mass an object
Hint: There are 5 steps 2. Explain the difference between mass and weight.

10-27-16 Take out lab materials and note packet
Have graph and transition sheet out

BP oil spill https://www.youtube.com/watch?v=gvuzuyEKLd8

Brainpop video

How fast or slow molecules move
TEMPERATURE Definition Equipment Label Example TEMPERATURE How fast or slow molecules move Thermometer F (Fahrenheit) K (Kelvin) C (Celsius) Cold (slow) Hot (fast)

BOILING/CONDENSATION (WATER)
LET’S COMPARE FAHRENHEIT CELSIUS KELVIN BOILING/CONDENSATION (WATER) 212º F 100º C 373º K FREEZING/MELTING (WATER) 32º F 0º C 273º K BODY TEMPERATURE 98.6º F 37º C 310º K ABSOLUTE ZERO -459.4º F 273º C 0º K

WHAT IS ABSOLUTE ZERO? Temperature at which molecules STOP moving (object will not exist).
HAVE WE EVER REACHED IT? No

HOW TO CONVERT BETWEEN SCALES…
CELSIUS TO FAHRENHEIT º F = 1.8(c) + 32 FAHRENHEIT TO CELSIUS º C = .56(f – 32) CELSIUS TO KELVIN º K = c + 273 KELVIN TO CELSIUS º C = k – 273

Density

Amount of molecules in a space
Density Definition Equipment Label Example DENSITY Amount of molecules in a space - Balance - Ruler - Graduated Cylinder D=m/v g/cm³ g/ml g/cc Density

GLUE 5 PIECES OF PAPER INSIDE EACH OF THE THREE BOXES.
“VISUALIZING DENSITY” PICK UP 15 PIECES OF PAPER. EACH PIECE WILL REPRESENT ONE MOLECULE OF MATTER (IN OTHER WORDS…MASS!) THERE ARE 3 BOXES DRAWN BELOW. NOTICE THAT EACH BOX DECREASES IN THE AM0UNT OF SPACE IT OCCUPIES (IN OTHER WORDS…VOLUME!) GLUE 5 PIECES OF PAPER INSIDE EACH OF THE THREE BOXES.

ANSWER THESE QUESTIONS:
1. HOW DOES THE MASS (# OF PAPER PIECES) COMPARE FOR EACH BOX? 2. HOW DOES THE VOLUME COMPARE FROM BOX 1 TO BOX 2? BOX 2 TO BOX 3? 3. DENSITY IS THE AMOUNT OF MATTER IN A GIVEN SPACE. KNOWING THIS, WHICH BOX WOULD HAVE THE GREATEST DENSITY? WHY? 4. EXPLAIN WHAT DENSITY MEANS IN YOUR OWN WORDS. ______________________________________________________________

“DENSITY AS A CONSTANT”
PICK UP 14 PIECES OF PAPER. EACH PIECE WILL REPRESENT ONE MOLECULE OF MATTER (IN OTHER WORDS…MASS!) LET’S SAY, THE FIRST BOX DRAWN BELOW OCCUPIES 8cc OF SPACE (THIS IS ITS VOLUME). GLUE 8 PIECES OF PAPER INTO THAT BOX. NOW, IF THIS BOX HAS A VOLUME OF 8cc AND A MASS OF 8g, WHAT IS ITS DENSITY (SHOW YOUR WORK)? D= M/V 8g/8cc = 1.0g/cc

AND A MASS OF 4g, WHAT IS ITS DENSITY (SHOW YOUR WORK)?
IF I CUT THE FIRST BOX IN HALF, WHAT WOULD ITS VOLUME BE? 4cc IF I CUT IT IN HALF, IT WOULD LOSE HALF OF ITS MOLECULES (MASS). WHAT WOULD ITS NEW MASS BE? 4g NOW, USE A RULER AND DRAW A BOX HALF THE SIZE OF BOX 1 AND GLUE HALF THE AMOUNT OF MOLECULES IN IT. NOW, IF THIS BOX HAS A VOLUME OF 4cc AND A MASS OF 4g, WHAT IS ITS DENSITY (SHOW YOUR WORK)? D= M/V 4g/4cc = 1.0g/cc

IF I CUT THE SECOND BOX IN HALF, WHAT WOULD ITS VOLUME BE? 2cc
IF I CUT IT IN HALF, IT WOULD LOSE HALF OF ITS MOLECULES (MASS). WHAT WOULD ITS NEW MASS BE? 2g NOW, USE A RULER AND DRAW A BOX HALF THE SIZE OF BOX 2 AND GLUE HALF THE AMOUNT OF MOLECULES IN IT. NOW, IF THIS BOX HAS A VOLUME OF 2cc AND A MASS OF 2g, WHAT IS ITS DENSITY (SHOW YOUR WORK)? D= M/V 2g/2cc = 1.0g/cc D= M/V 2g/2cc = 1.0g/cc

CONCLUSION: DENSITY IS A CONSTANT
*CONCLUSION: DENSITY IS A CONSTANT! REGARDLESS OF THE SIZE OF AN OBJECT IF IT IS MADE OF THE SAME MATERIAL, IT HAS THE SAME DENSITY!

FLOAT VERSUS SINK Imagine the girl curled her legs to her chest. Would she still float? No Explain why the same girl, made of the same material, having the same mass can float in the picture above? (Remember our understanding of density) Because her mass is spread over a larger volume (space). Ex: 10/5 = 2 vs. 10/10 = 1 What is water’s density? 1.0g/ml

2. 1.0 g/ml (neutral/buoyancy)
Density? Relative to water, what do you think the densities of the objects in this picture are? g/ml or < 1.0 g/ml g/ml (neutral/buoyancy) 1 3. > 1.0 g/ml 2 3

Do Icebergs float or sink? Float
What is the density of ice? 0.9 g/ml What does that say about an Iceberg? 90% is under water

In the three glasses of water below, draw a cube with the following densities:
0.7 g/ml g/ml g/ml

Rule for floating objects: Object should be less than 1
Rule for floating objects: Object should be less than 1.0 g//ml or % below for floating object = density.

The metric system is based on the number ten
The metric system is based on the number ten. It is easier to convert from larger to smaller or smaller to larger units because you just need to move the decimal point. REMINDERS: A WHOLE NUMBER HAS A DECIMAL POINT AT THE END FOLLOWED BY A ZERO. ZEROES CAN BE ADDED AS PLACE HOLDERS WHEN CONVERTING TO SMALLER UNITS. MOVE THE DECIMAL POINT THE SAME AMOUNT OF PLACES AND DIRESTION AS THE CHART. USING YOUR HANDMADE CONVERSION CHART, CONVERT THE FOLLOWING METRIC UNITS. K H DK (g, L, M) d c m

Try these conversions!

1) 210 kg = 2100 hg 2) dkl = 9 cl 3) mm = m 4) .07 dkl = 700 ml 5) 58 g = .058 kg 6) dm = 0.35 cm 7) 105 m = .105 km 8) 9.9 ml = .099 dl 9) 6.2 kg = 620,000 cg 10) 1 L = 1,000 ml

C day 9/9/16 1. turn in science tweet

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