9/12 - 7th Grade Agenda Learning Objective: Learn the powers of 10 Collect HW: Textbook Scavenger Hunt Video: Where is Metrics HW: Metrics Worksheet #1 HW: Poster of Science due 9/15 & 9/16 (20 points)

Daily Reflection Prompt: Why don’t Americans use the metric system in every day life?

Loose 1 point if you don’t put your First Name and Last Name on your assignment.

Class Reading – Making Measurements p.672

What is the standard system of measurement used by scientist around the world? S_______ I______________ SI International System of Units Metric System ystem nternational

What is the SI unit for measuring length? eter M____________

What is the SI unit for measuring Liquid Volume? iter L____________

What is the SI unit for measuring Mass? ram G____________

What is the SI unit for measuring Temperature? elsius C____________

How do we measure smaller and larger objects in SI units? Through Prefixes Kilo- X1000 Hecto- X100 Deca- X10 Deci- 1/10 Centi- 1/100 Milli- 1/1000

Here is another way to remember the prefixes King Henry Does Drink Chocolate Milk Kilo- X1000 Hecto- X100 Deca- X10 Deci- 1/10 Centi- 1/100 Milli- 1/1000

Prefix Symbol Multiplier Exponential yotta Y 1,000,000,000,000,000,000,000,000 1024 zetta Z 1,000,000,000,000,000,000,000 1021 exa E 1,000,000,000,000,000,000 1018 peta P 1,000,000,000,000,000 1015 tera T 1,000,000,000,000 1012 giga G 1,000,000,000 109 mega M 1,000,000 106 kilo k 1,000 103 hecto h 100 102 deca da 10 101 1 deci d 0.1 10¯1 centi c 0.01 10¯2 milli m 0.001 10¯3 micro µ 0.000001 10¯6 nano n 0.000000001 10¯9 pico p 0.000000000001 10¯12 femto f 0.000000000000001 10¯15 atto a 0.000000000000000001 10¯18 zepto z 0.000000000000000000001 10¯21 yocto y 0.000000000000000000000001 10¯24

How many meter in a kilometer? X1000 Hecto- X100 Deca- X10 Deci- 1/10 Centi- 1/100 Milli- 1/1000

How many meter in a centimeter? Kilo- X1000 Hecto- X100 Deca- X10 Deci- 1/10 Centi- 1/100 Milli- 1/1000

How big is a meter? Width of a Thickness Height of a Little more of a dime Width of a Fingernail Height of a door handle Little more than ½ mile

How big is 1 millimeter? Width of a Thickness Height of a Little more of a dime Width of a Fingernail Height of a door handle Little more than ½ mile

How big is 1 centimeter? Width of a Thickness Height of a Little more of a dime Width of a Fingernail Height of a door handle Little more than ½ mile

How big is 1 kilometer? Width of a Thickness Height of a Little more of a dime Width of a Fingernail Height of a door handle Little more than ½ mile

Which side of the ruler measures metric units? The side with the smaller lines measures in metric units The side with the larger lines measures in inches

How much is 1 cm? This is 1 cm

1 mm are the small unnumbered lines How much is 1 mm? 1 mm are the small unnumbered lines

Is this the correct way to measure the length of the pencil? No! Measurement should start with the beginning of the “Tick” marks

10 ? 100 Centimeter = _____ Decimeter For every step upward on the chart you are dividing by 10 or moving the decimal one place to the left.. How do we convert from Centimeter to Decimeter? 10 ? 100 Centimeter = _____ Decimeter

For every step downward on the chart you are multiplying by 10 or moving one place value to the right. How do we convert from Kilometer to Meter? 100,000 ? 100 Kilometer = _________ Meter

The sun is about 150,000,000,000 meters from earth What is another way to write the same number without writing all the zeros? Power or 10 15 X 10 meters 10 ?

Powers of 10 103 = 1000 102 = 100 101 = 10 100 = 1 10-1 = .1 10-2 = .01 10-3 = .001

Why should we use the metric system or System International? All the countries around the world including United States uses the metric system Its easier to divide or multiply by 10 than by 12 or 5280 (i.e. English System)

Daily Reflection Write 3 facts you learned or questions that you have from the video

Power of 10 Website http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/