Section 2: Standards of Measurement.  A standard is an exact quantity that people agree to use to compare measurements.  A standard is always exactly.

Slides:

Advertisements

Similar presentations

Warm Up On page 11 of your science notebook: On page 11 of your science notebook: Do the following for each of the four items at your desk: Do the following.

Advertisements

Standards of Measurement

The Metric System. 1.The Metric System a. Standard system used by scientists. b. AKA S.I. (International System of Units) c. Decimal System based on the.

Measurements and the Metric System

Section Units of Measurement

You may correct a low quiz score to an 85%

Metric – Science and Measurement

Section 2.1 Units and Measurements

1 Standards for Measurement. 2 Mass and Weight 3 Matter: Anything that has mass and occupies space. Mass : The quantity or amount of matter that an object.

Instructional Objective: 1.Identify Standards of Measurements 2.Learn about SI units.

Chapter 1: Introduction

Ms. Moore 8/17/12 Albert Einstein physicist Stephen Hawking cosmology and quantum gravity.

Physical Science Pages 14-20

Click a hyperlink or folder tab to view the corresponding slides.

How much? How long? How many?

Unit 2 Measurement. QuestionAnswer 1.What is a standard? 1.A standard is an exact quantity against which comparisons can be made. The “foot” was based.

Measurement Systems. Suppose the label on a ball of string indicates that the length of the string is 150. Is the length 150 feet, 150 m, or 150 cm? For.

Chapter 1 Nature of Science. Chapter 1: Nature of Science Section 1: The Methods of Science.

Measurements. Number vs. Quantity A number without a unit is meaningless A number without a unit is meaningless It is 4 long It is 4 long 4 what? 4 what?

Chapter 1 Measurement.

The Nature of Science and Technology

Standards of measurement

The International System of Units Also known as SI units It is the modern day metric system It is a form of measurement used all around the world.

The ABC’s of Science Review of length, volume Metric System Part 2:

Metric System. History At the end of the 18 th century in France, scientists created the metric system. It was designed with several features in mind.

Do Now: Accuracy & Precision Draw two bullseyes. On one, show three darts that are accurate. On the other, show three darts that are precise.

Pre-AP Chemistry Chapter 2 “Measurements and Calculations”

Scientific Units 1.2 Notes Part B. Unit Objectives Use appropriate SI units for length, mass, time, temperature, quantity, area, volume and density. (ACT.

Metric System Developed by the French in the 1790’s Official name is système international ďunites or SI All other major countries use the metric system.

Metric System International System of Units (SI).

Metric System International System of Units (SI).

Section 1 Section 1 The Methods of Science Science is a method for studying the natural world. It is a process that uses observation and investigation.

STANDARDS OF MEASUREMENT Section 2

Standards of Measurement Chapter 1 Section 2. Learning Targets Students will understand the difference between English and SI measuring systems. Students.

1-3: Measurement What do scientists use to measure length, mass, volume, density, time, and temperature?

Standards of Measurement

Standard Measurements

The Standard Measurement System

Basic Tools and Measurement in Metrics AC Science.

Unit 1: Science & Technology Lesson 1: Measurement- A Common Language Essential Questions: Why do scientists use a standard measurement system? What are.

Units and Standards A standard is an exact quantity that people agree to use to compare measurements. Suppose you and a friend want to make some measurements.

The metric system - SI The system of measurement in science Lecture Notes.

Measurement in Metrics AC Science. Metric System Systems Internationale Systems Internationale AKA “SI” AKA “SI” Based on factors of 10 Based on factors.

Chapter 1: The Nature of Science. What is Science? Life, Earth and Physical Science Living things Earth and Space Matter and Energy Chemistry Physics.

1.2 Notes Continued Measurements. Measuring Distance In scientific measurement length is the distance between two points The SI base unit of length is.

CH 2: Phys. Sci. Methods The goal here is for you to learn how to take measurements using the SI system and to create quality graphs from data you collect.

Chapter 1 The Nature of Science

Measurement. Scientific Notation is a way of expressing a value as the product of a number between 1 and 10 and a power of 10. It makes very large or.

Chapter 2 Physical Science Review “Physical Science Methods”

1cm Sand Meter Stick BalanceSpring ScaleGraduated Cylinder Mass/Volume The SI system It is a group of units used by scientists to measure length, mass,

Measurement Chapter 2 Section 1. Standard measurement System The universal system of measurement is the metric system. The metric system is based around.

3.2 Units of Measurement Do Now: Based off prior knowledge of math, convert the following: 6 meters to centimeters milliliters to deciliters 1300.

3.2 Units of Measurement > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 3 Scientific Measurement 3.1 Using and.

SI System International System of Units Taking Measurements.

ENERGY AND MOTION Unit 1-section 1 Science- a process that uses observation and investigation to gain knowledge about events in nature.

Chapter 1 The Nature of Science.

Chapter 1 The Nature of Science.

Essential Questions What is a standard of measurement?

Measure for Measure Chapter 1 Sec 3

Standards of Measurement

Section 2: Standards of Measurement

Table of Contents The Nature of Science

6th and 8th Science Metric Measurement

Measurement – MASS, VOLUME, DENSITY

8th Science Metric Measurement

Chapter 1 The Nature of Science 1.2 Standards of Measurement

Units and Standards A standard is an exact quantity that people agree to use to compare measurements. Suppose you and a friend want to make some measurements.

Section 2: Standards of Measurement

1.2 Essential Questions What is a standard of measurement?

Presentation transcript:

Section 2: Standards of Measurement

 A standard is an exact quantity that people agree to use to compare measurements.  A standard is always exactly the same quantity when it is used anywhere in the world.

 A measurement is a way to describe the world using numbers.  For a measurement to make sense it must include a number and a unit.  The metric system of measurement is based on multiples of ten.

 In 1960, the International System of Units was developed as an improvement to the metric system of measurement.  This system is abbreviated SI form the French Le Systeme Internationale d’Unites.

 Each type SI measurement has a base unit  There are seven (7) base units used in the SI system of measurement. Quantity MeasuredUnitSymbol LengthMeterm MassKilogramkg TimeSeconds Electric currentAmpereA TemperaturekelvinK Amount of substanceMolemol Intensity of lightCandelacd

 The SI system is easy to use because it is based on multiples of ten.  A prefix is added to the name of the base unit to indicate how many multiples of ten it should include. PrefixSymbolValue Kilok1,000 Decid0.1 Centic0.01 Millim0.001 Microµ Nanon

 What is science?  What is a standard?  What are the three (3) major categories of science?  Upon which numeric multiple is the metric system based?  How does science explain God?  Name the seven (7) base units in the SI system.  Identify three (3) ways of investigating the natural world.  How many nanoseconds are in 2 seconds of time?

 In science, the word length is used to describe the distance between two points.  Metric rulers and metersticks are commonly used to measure length.  A meterstick is a little bit longer than a yardstick.

 The unit you choose will depend on the object being measured.  By choosing the best unit, you can avoid very large or very small numbers.

 Volume is the amount of space an object fills.  The volume of a rectangular solid, such as a brick, is found by multiplying its length, width, and height (V=l x w x h).  Volume is expressed as a “cubic” amount.

 What is the volume of a 2m x 3m x4m moving truck?  Write the formula:(V= l x w x h)  Substitute given values:(V=2m x 3m x 4m)  Solve the equation:24m 3

 To measure the volume of a liquid, you first must know how much liquid the container can hold.  Liquid is commonly measured in liters and milliliters.  1 milliliter = 1 cm 3

 What is an independent variable?  Why is the dependent variable measured instead of the independent variable?  What is the volume of a brick that has a length of 20 cm, a width of 6 cm, and a height of 5 cm?  What are the most common units for expressing the volume of liquids?

 Mass is the measure of how much matter is in an object.  You can determine mass by using a balance.

 A triple-beam balance gets its name because it has three beams that allow you to move known masses along the beam.  Because a triple beam balance compares a known mass to an unknown mass it is unaffected by gravity. Unlike a spring scale which really measures weight, the triple beam balance gives a true measure of mass.

 Density is the amount of mass in one cubic unit of volume of an object.  Density = mass/volume  If two objects are the same size and one object has a greater mass, it also has a greater density.

 Suppose an object weight 15 g and has a volume of 5 cm 3. What is the density of the object?  Write the formula:D=m/v  Substitute given values:D=15 g/5 cm 3  Solve the equation:3 g/cm 3

 Scientists need to keep track of how long it takes something to happen.  The unit of time in the SI system is second.

 Commonly think of temperature as how hot/cold something is...  Three scales for measuring temperature A.Fahrenheit B.Celsius C.Kelvin

 Based on the temperature of the human body at 98.6º  Water freezes at 32º  Water boils at 212º

 Scientists use the Celsius scale to measure temperature.  Water freezes at 0ºC  Water boils at 100ºC  The scale is divided evenly into 100 degrees between freezing and boiling.

 SI for measuring temperature is kelvin (K).  0ºK is called absolute zero.  0ºK = -273ºC  Divisions on the Kelvin scale are the same as the Celsius scale.

Sharon used a push-machine to thrust a basketball and a volleyball across a football field. The volleyball went farther than the basketball 9 out of 10 times. 1. What is the IV? DV? Constant (controlled variables)? 2. What can Sharon conclude about the density of the basketball? Why? 3. What other measurements can Sharon take to support her conclusions?