1. Basic Science Skills

2. SI Units Scientists use a standard set of units for all measurements
The SI Units
Same as the Metric System
What you are measuring
Unit
Symbol
Length
meter m
Mass
gram g
Temperature
Celcius C
Time
second s
Volume
liter L
end

3. SI Unit Prefixes
When you make a measurement, you need to use the right unit
Would you measure a classroom in feet or miles?
SI Units allow us to convert by moving decimals and adding prefixes.
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4. SI Unit Prefixes
With the SI units you can convert between small and large measurements using:
King Henry Died By Drinking Chocolate Milk
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5. SI Unit Prefixes King Henry Died By Milk Kilo Hecto Deca Deci Centi
Drinking
Chocolate
Milk
Kilo
Hecto
Deca
Deci
Centi
Milli k h da d c m
To convert between prefixes:
Use the chart above to find your first prefix.
Use the chart above to find your final prefix.
Count the number of times you move your decimal
Move the decimal in that direction the same number of places
If there is only 1 letter, then you are at the Base Unit
end
end

6. SI Unit Prefixes 35 mL = ___ L 12 g = ___ mg 25 cm = ___ mm
4 L = ___ daL
4500 mg = ___ g
0.07 m = ___cm
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7. Temperature There are 3 scales used to measure temperature
Fahrenheit (°F): Used in the U.S.
Celsius (°C): Used in all other countries in the world
Kelvin (K): Used by scientists
To convert between them, use the following:
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8. Temperature Convert the following temperatures: 26 °C = _____ °F
98 °F = _____ °C
34 °C = _____ K
901 °C = _____ °F
60 °C = _____ K
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9. Temperature Temperatures you should know: °F °C K Water Boils 212 100
373
Human Body
98.6 37
310
Room Temp 68 20
293
Water Freezes 32
273
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