Length: distance between two points meter (m) Mass: how much matter something has gram (g) Volume: how much space something takes up liter (L) Temperature:

Slides:

Advertisements

Similar presentations

Advertisements

What are SI Units? Measurement used throughout the world when performing calculations related to scientific investigations Volume (cm3 =mL)

SI – International System of Units

Metric System Basics. The truth about the metric system: It is used in almost every country, besides the US. All scientists use it. It is as easy as counting.

The Metric System.

Section 2: Standards of Measurement

What is Volume? Volume- the amount of space matter takes up. 9/27/

MEANINGTOOLFORMULAUNIT LENGTH AREA VOLUME WEIGHT MASS DENSITY TEMP.

THE METRIC SYSTEM Edited by P. Stewart WHY DO WE USE THE METRIC SYSTEM? Almost all other countries are using the metric system Other countries’ companies.

SI Measurements (also known as “metric system”) “SI” stands for “System International” or “International System of Measurement”

MEASUREMENT. Measure  We measure in order to 1.) DESCRIBE 2.) COMPARE 2.) COMPARE  We measure: (1.) Length (2.) Mass (3.) Volume  In Science we measure.

Metric System KilometerHectometer DekameterMeterDecimeterCentimeter Millimeter.

Overview of Metric System

Metric System. Measurements Length-measure of distance –Measured with a yard stick or ruler Volume-measure of how much space an object takes up –Measured.

Length: distance between two points meter (m) Mass: how much matter something has gram (g) Volume: how much space something takes up liter (L) Temperature:

Quantitative Observations/Data Measurements. Base Units in the SI System Length:________ Volume:_________ Mass:________ Temperature:__________ Meter (m)

Metric System (SI Units) “I’m ten times better than the Standard system of measurement!”

Metric Measurement Notes

Metric System Basics. What do we generally use now? Most people in the U.S. use the English Standard System (which even the British no longer fully use).

Metric System Basics.

Metric Measurement. Measurement Metric System – A. Why we use the metric system: 1. Universal system of measurement having standard units. All scientists.

SI Base units Length in meters (m) Mass in grams (g) Volume in liters (l) or meters cubed (m 3 ) Time in seconds (s) Temperature in degrees Celsius (°C)

9/7 & 9/8 - 7 th Grade Agenda Collect HW: Textbook Scavenger Hunt & Signed Syllabus Metrics Lesson Continued Video: Where is Metrics Metrics Lab HW: Metrics.

Metric System based on a base unit that corresponds to a certain kind of measurement Length = meter Volume = liter Mass = gram Density = grams per cm³.

Chemistry CP. Everyday Conversions in NB How many pennies are in 1 dollar? 100 pennies=1 dollar 2. How many dollars is in pennies? $

Measurement  A number and a unit that define a quantity  Time  Distance  Length  Volume  Temperature.

There are 4 main reasons why the metric system is used around the world. No fractions Easy conversions – NO MATH! Based on factors of 10 The same prefixes.

THE METRIC SYSTEM. II. Metric System Number management system used by scientists today to communicate data. Universal form of measurement. Based on the.

Metric System Basics. International System of Units (SI) Created in France in the 18 th century as a more accurate and universal way to make measurements.

Metric System Review. Two Systems of Measurement Metric (Systeme International) -Used throughout the world -Used in Science English -Used in the United.

Metric Measurement. volume To Measure the volume of a liquid: –Always use the smallest one that can fit the volume you need. Use a 10 ml cylinder if you.

Metric System Basics. Metric System The metric system is based on a base unit that corresponds to a certain kind of measurement Length = meter Volume.

Metric System Basics. Metric System The metric system is based on a base unit that corresponds to a certain kind of measurement Length = meter Volume.

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,

Measuring Up #1 Question: Name three instruments used to measure volume. Answers: graduated cylinder, ruler, beaker, flask (200 points)

Metric System The metric system is based on a base unit that corresponds to a certain kind of measurement Length = meter Volume = liter Weight (Mass)

THE METRIC SYSTEM (International System of Units)

THE METRIC SYSTEM A Global System of Measurement.

MEASUREMENTS & METRIC Physics. Jason goes metric…

Metric System Basics. Let’s Get Metric! Let’s do some review work before we begin.

Metric System Basics.

Metric System Basics.

Tools for Metric Measurement

Metric System Basics.

Introduction to METRIC MEASUREMENT

Metric System Basics.

Metric System Basics.

Metric Measurement Notes

Metrics Measurement Safety Scientific Method

Metric System Basics.

Metric System Basics.

Whiteboard Protocol Bell Work: Name one organic compound.

Metric System Basics.

Metric System Basics.

Metric System Basics & SI Units of Measurement

Metric System Basics.

Metric System Basics.

Metric System Basics.

Metric System Basics.

Metric System Basics.

Metric System Basics.

Metric System Basics.

Metric System Review Scientists use the metric system to measure things such as volume, distance, and time. Meters, grams, seconds, degrees celsius,

Welcome! Lets do a Quickwrite! 8/21/2012

Presentation transcript:

Length: distance between two points meter (m) Mass: how much matter something has gram (g) Volume: how much space something takes up liter (L) Temperature: how warm or cold something is degrees Celsius (°C)

Prefixes + standard base unit Centi + meter = Centimeter Kilo + liter = Kiloliter

The three most common prefixes: kilo centi milli kilohectodeca Base Units m/g/L decicentimilli

Scale moves in multiplications of 10 Example: Centimeters are 10 times larger than millimeters 1 centimeter (cm) = 10 millimeters (mm) kilohectodeca Base Units m/g/L decicentimilli

Centimeters are 10 times larger than millimeters It takes more millimeters for the same length

For each “step” right, multiply by 10 Trick: move the decimal point one place to the right for each “step” desired Example: change meters to centimeters 1.00 meter = 10.0 decimeters = 100. centimeters kilohectodeca Base Units m decicentimilli

For each “step” left, divide by 10 Trick: move the decimal point one place to the left for each “step” desired Example: change meters to kilometers 1100 meters = decameters = 11.0 hectometers = 1.1 kilometers kilohectodeca Base Units m decicentimilli

If you move to the left in the diagram, move the decimal to the left If you move to the right in the diagram, move the decimal to the right kilohectodeca Base Units m/g/L decicentimilli

Measurement

How do scientists measure… … mass? Scale

How do scientists measure… … mass? What is the basic unit for mass? gram (g) Scale

How do scientists measure… … length/height? Ruler

How do scientists measure… … length/height? What is the basic unit for length/height? meter (m) Ruler

How do scientists measure… … temperature? Thermometer

How do scientists measure… … temperature? Basic unit for temp? degrees Celsius (C) Thermometer

How do scientists measure… … the volume of a liquid? Flask Beaker Graduated Cylinder

How do scientists measure… … volume of a liquid? –Flask, beaker, graduated cylinder What is the basic unit for liquid volume? liter (L)

Which is best for measuring liquid volume?

Why is it the best? ACCURACY

What is accuracy? What does it mean to measure something accurately?

What is the difference between accuracy and precision? If your measurements are accurate, are they precise? If you measurements are precise, are they accurate?

Accuracy vs. Precision The more ACCURATE a measurement is, the closer it is to the TRUE/CORRECT/EXACT value. The more PRECISE a measurement is, the more REPRODUCIBLE/ REPEATABLE it is.

Accuracy vs. Precision

High Accuracy, Low Precision Low Accuracy, High Precision

Another Way of Looking At It

ACCURATELY reading volume: Where should you be looking?

meniscus

How big is BIG? How small is SMALL? NumberSci. Not.Unit PrefixAbbreviation 1,000,000,000, teraT 1,000,000, gigaG 1,000, megaM 1, ? ?? ? ?? ? ?? 0.000, microµ 0.000,000, nanon 0.000,000,000, picop

How big is BIG? How small is SMALL? NumberSci. Not.Unit PrefixAbbreviation 1,000,000,000, teraT 1,000,000, gigaG 1,000, megaM 1, kilok centic millim 0.000, microµ 0.000,000, nanon 0.000,000,000, picop

Unit Conversions You know your height in feet/inches. How can you convert this to meters/centimeters? DIMENSIONAL ANALYSIS