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)
Jan 18, 2016
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/