9/7 & 9/8 - 7th Grade Agenda

Collect HW: Textbook Scavenger Hunt & Signed SyllabusMetrics Lesson ContinuedVideo: Where is MetricsMetrics LabHW: Metrics Worksheet #3HW: 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

ystem nternational

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

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

1 100

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?

Milli-

1/1000 Centi-1/100

Deci-1/10

Kilo-X1000

Hecto-X100

Deca-X10

1000 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 aFingernail

Height of adoor handle

Little more than ½ mile

How big is 1 millimeter?

Thickness of a dime

Width of aFingernail

Height of adoor handle

Little more than ½ mile

How big is 1 centimeter?

Thickness of a dime

Width of aFingernail

Height of adoor handle

Little more than ½ mile

How big is 1 kilometer?

Thickness of a dime

Width of aFingernail

Height of adoor 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..

100 Centimeter = _____ Decimeter10?

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 = _________ Meter100,000?

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 10

• 15 X 10 meters10?

Powers of 10

101 = 10102 = 100103 = 1000

100 =10-1 =10-2 =10-3 =

1.1.01.001

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

Metrics Lab

Power of 10 Website

• http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/