Monday, September 8 th Entry Task Describe WHERE Safeway is. Schedule: Objects in motion notes and activityObjects in motion notes and activity Objective: I can describe an object’s position and motion with respect to a reference pointI can describe an object’s position and motion with respect to a reference point Homework 10.1 RSG if not finished in class10.1 RSG if not finished in class Please have on desk: 10.1 Vocabulary 10.1 Vocabulary

Possible Answer Your description of where Safeway will depend on what you use as a reference point. For instance: Safeway is 1 mile away from here.Safeway is 1 mile away from here. Safeway is across from Jack in the Box.Safeway is across from Jack in the Box. Safeway is on the corner of Bridgeport and 40 th.Safeway is on the corner of Bridgeport and 40 th. Reference Points help to describe where something is and/or how to get there

10.1 Notes- An object in motion changes position Position – (of a place or object) is the location of that place or objectPosition – (of a place or object) is the location of that place or object You can describe where something is by comparing it’s position with where you currently are.You can describe where something is by comparing it’s position with where you currently are. Compare the position of something in the room with where you are sitting. Write this in your journal.Compare the position of something in the room with where you are sitting. Write this in your journal.

How do you describe a position? Reference Point- a location to which you compare other locations.Reference Point- a location to which you compare other locations. You can describe the position of your house by using the school as a reference pointYou can describe the position of your house by using the school as a reference point –Mrs. Krogh’s house is 0.2 miles west of Bridgeport. Describe your position in the classroom using the door as a reference point. Write this in your journal.Describe your position in the classroom using the door as a reference point. Write this in your journal.

Measuring Distance The way you measure distance depends on what you want from the information.The way you measure distance depends on what you want from the information. –Sometimes you need to know the straight-line distance between two positions –Sometimes you need to know the total length of a certain path between two positions. UnitsUnits –Meter –Metric System Step Ladder

Motion is a Change in Position Motion- the change of position over time.Motion- the change of position over time. Give an example of some things that you have seen that have motion.Give an example of some things that you have seen that have motion. Describe a motion that you are witnessing right nowDescribe a motion that you are witnessing right now

Describing Motion When you described something that you witnessed that had motion, did you describe the following things?When you described something that you witnessed that had motion, did you describe the following things? –Speed of the object –How quickly or slowly (often) the object changes position?

Relative Motion Have you ever sat in a parked car and had the car next to you back up or go forward? Did you feel like it was your car that was moving?Have you ever sat in a parked car and had the car next to you back up or go forward? Did you feel like it was your car that was moving? How an observer sees a motion depends on how it compares with his own motion.How an observer sees a motion depends on how it compares with his own motion. Frame of reference-location of an observerFrame of reference-location of an observer As I walk past you. Am I moving position or are you? Think about different frames of reference.As I walk past you. Am I moving position or are you? Think about different frames of reference.

Passport Why does a jet airplane high in the sky look like it is moving very slowly even though it is traveling 300+ mi/hr?Why does a jet airplane high in the sky look like it is moving very slowly even though it is traveling 300+ mi/hr?

Possible Answer When you view a plane in the air, there are no reference points to help you judge how fast the plane is traveling (or the reference points are so large, it is difficult to tell). When you view a plane in the air, there are no reference points to help you judge how fast the plane is traveling (or the reference points are so large, it is difficult to tell). Reference Points also help us to judge speed and direction of motion Reference Points also help us to judge speed and direction of motion

Tuesday, September 9 th Entry Task Explain why early scientists assumed the sun revolved around the earth.Explain why early scientists assumed the sun revolved around the earth. Use Vocab. from 10.1Use Vocab. from 10.1Schedule: Speed notesSpeed notes Speed mathSpeed math Homework Speedy math handoutSpeedy math handout Objective: I can explain that speed measures how fast position changes Please Have on Desk: 10.1 RSG, journal, and sharpened pencil10.1 RSG, journal, and sharpened pencil

Possible Answer From earth’s point of view (frame of reference) it appears that the sun changes position in the sky. From earth’s point of view (frame of reference) it appears that the sun changes position in the sky. In reality, it is the earth spinning that makes the sun appear as though it is changing position in the sky. In reality, it is the earth spinning that makes the sun appear as though it is changing position in the sky. RELATIVE MOTION! RELATIVE MOTION!

Speed Diagnostic Quiz 1.List the 2 variables you must know in order to calculate the speed of an object. 2.List at least 3 units that can be used to indicate the speed of an object. 3.What tools would you need to calculate the average speed of a sprinter (Radar gun is not the correct answer)? 4.If a X-Country runner finishes a 3 mile race in 18 minutes, what is her average speed.

List the 2 variables you must know in order to calculate the speed of an object.List the 2 variables you must know in order to calculate the speed of an object. DISTANCE AND TIMEDISTANCE AND TIME

List at least 3 units than can be used to indicate the speed of an object. METERS/SECOND (m/s) MILES/HR (mi/hr) KILOMTERS/HR (km/hr) FEET/YR. (Ft/yr) CENTIMETERS/DECADE

What tools would you need to calculate the average speed of a sprinter (Radar gun is not the correct answer)? MEASURING TAPE – How far did it go STOPWATCH – How long did it take to get there

If a X-Country runner finishes a 3 mile race in 18 minutes, what is her average speed. S = D/T S = 3 miles/18 minutes S = mi/min

Position is the location of a place or an object. Motion is the change in position of an object over time.

Motion: Is measured as the distance an object travels between a beginning and an ending point. Time: Is measured as the time needed for an object to travel between a beginning and an ending point.

Units: –Distance: m or km for longer distances; cm for shorter distances. –Time: seconds usually although it can also be hours.

Speed is a measure of how fast something moves. Speed is a measure of how far something moves in a given time. The greater the speed an object has, the faster it changes position AND the farther it moves in a unit of time.

To calculate speed, you need to know both distance and time measurements. Speed = distance S = d/t time The standard metric unit for speed is m/s, but are also given in km/hr.

A wheelchair racer completes a 100- meter course in 20 seconds. What is his speed? –What do you know? distance = 100 m time = 20 s -What do you want? speed -Use the formula: S = 100 m = 5 m 20 s s

1.A woman runs 200 m in 25 s. What is her speed? 2.If you travel 100 m in 50 s, what is your speed?

Sometimes you are given Speed and you have to determine either a missing distance or time: what do you do? Time is the unknown: Distance/Speed Distance is the unknown: Time x Speed

One way to show the motion of an object is by using a graph that plots the distance the object has traveled against time. This kind of graph shows how speed relates to distance and time.

Give your graph a TITLE. Time is on the x-axis (horizontal). Be sure to scale properly and include your units! Distance is on the y-axis (vertical). Be sure to scale properly and include your units! The steepness (slope) of the line indicates the speed of the object!

Time (seconds) Distance (meters)

Wednesday, September 10 th Entry Task If you travel 39 miles on the freeway in 0.6 hours, have you broken the speed limit of 65 mi/hr? Show math to prove your answer. Please have on desk: Speed math practice, pencil, calculatorSpeed math practice, pencil, calculator Homework: Re-read 10.2 carefullyRe-read 10.2 carefully Objective: I will relate graphs, stories, and data. Schedule: 10.2 RSG10.2 RSG Every graph tells a storyEvery graph tells a story

Possible Answer Your average speed of 65 mi/hr does not break the speed limit, but there is no way to tell from the information if you traveled over 65 mi/hr during any point in the trip.Your average speed of 65 mi/hr does not break the speed limit, but there is no way to tell from the information if you traveled over 65 mi/hr during any point in the trip. S = d = 39 miles = 65 milesS = d = 39 miles = 65 miles t 0.6 hrs hour t 0.6 hrs hour

Every Graph Tells a Story 1. Take out the Pink and Green cards from your bag 2. Spread the graphs (pink) out on your table so you can see each one 3. Carefully read each “story” and try to match it with a graph that displays that story. 4. Write the Correct Matches on your Data Sheet. 5. Read pg and complete remainder of worksheet.

Every Graph Tells a Story 1. Together, write a story that matches this graph.

Thursday, September 11 th Entry Task Explain why velocity is different from speed. Give an example of each.Explain why velocity is different from speed. Give an example of each.Schedule: Calculate Speed Activity (exit ticket)Calculate Speed Activity (exit ticket) Homework: Read 10-3 carefullyRead 10-3 carefully Objective: I can calculate and graph the speed of a moving object. Please Have on Desk: pencil, calculator pencil, calculator

Friday, September 12 th Entry Task Write the formula, show your work with units, and answer with units: An object is moving at a speed of 19 m/s for 247 m. How long did it take? Schedule: 10.2 Quiz10.2 Quiz Acceleration notesAcceleration notes Objective: I will explain the relationship between speed and acceleration. I will explain the relationship between speed and acceleration. Homework Re-read 10.3 carefullyRe-read 10.3 carefully Please have on Desk: Speed activitySpeed activity Science journal and sharpened pencilScience journal and sharpened pencil