9/9 9/10 - 7 th Grade Agenda Collect HW: Metrics Worksheet #3 Lab Safety Stereo Microscope Lab...
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Transcript of 9/9 9/10 - 7 th Grade Agenda Collect HW: Metrics Worksheet #3 Lab Safety Stereo Microscope Lab...
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9/9 & 9/10 - 7th Grade Agenda
Collect HW: Metrics Worksheet #3Lab Safety Stereo Microscope LabVideo: Lab SafetyHW: Metrics Worksheet #4HW: Poster of Science due 9/14 & 9/15(20 points)
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Daily Reflection• Prompt: Why do scientists use the metric
system?
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Don’t forget to write “Absent” on top of your assignment if you
were absent.
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Don’t forget to work on you poster of Science
• 20 points• Due 9/14 & 9/15
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Class Reading : Lab Safety Symbols (p.686-687)
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Safety Goggles
Always wear safety goggles to protect your eyes in any activity involving ch_____, fl______ or heating, or the possibility of broken gl_______.
emicalames
assware
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Breakable GlasswareYou are working with materials that may be breakable, such as glass containers, glass tubing, thermometers, or funnels. Handle br________ materials with c____. Do not touch broken gl_______.
eakableareassware
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Heating
Use a cl_____ or tongs to pick up hot glassware. Do not touch hot objects with your bare h_____.ands
amp
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Electric Shock
Avoid the possibility of electric shock. Never use electrical equipment around w______, or when the equipment is wet or your hands are wet. Be sure cords are unta______ and cannot trip anyone.
ngled
ater
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Physical SafetyWhen an experiment involves physical ac_____, take precautions to avoid inj______ yourself or others. Follow instructions from your teacher. Alert your teacher if there is any reason you should not part_______ in the activity.
uring
tivity
icipate
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Reflection• Prompt: Write 3 interesting observation
you made during the stereomicroscope lab. (i.e. The coin looks like …..)
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Lab Safety Video
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Daily Reflection• Prompt: Write 3 important Safety tips (In
Complete sentences)
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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
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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
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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?
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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?
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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?
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Powers of 10
101 = 10102 = 100103 = 1000
100 =10-1 =10-2 =10-3 =
1.1.01.001