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 Worksheet #3 HW: Poster of Science due 9/14 & 9/15 (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 ystemnternational

What is the SI unit for measuring length? M____________ eter

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

What is the SI unit for measuring Mass? G____________ ram

What is the SI unit for measuring Temperature? C____________ elsius

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

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

PrefixSymbolMultiplierExponential yottaY1,000,000,000,000,000,000,000, zettaZ1,000,000,000,000,000,000, exaE1,000,000,000,000,000, petaP1,000,000,000,000, teraT1,000,000,000, gigaG1,000,000, megaM1,000, kilok1, hectoh decada decid0.110¯ 1 centic0.0110¯ 2 millim ¯ 3 microµ ¯ 6 nanon ¯ 9 picop ¯ 12 femtof ¯ 15 attoa ¯ 18 zeptoz ¯ 21 yoctoy ¯ 24

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

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

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

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

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

How big is 1 kilometer? Thickness 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

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

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

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

Powers of = = = = = = =

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

Metrics Lab

Power of 10 Website enceopticsu/powersof10/