Transcript CONVERSIONS BETWEEN U.S. AND SI UNITS

The way science
works
•Critical thinking – to
look at a problem
from all directions in
order to come up
with the “Best”
solution _
slide show
Scientific tools
• Triple beam balance- Mass
• Metric ruler- length
• Beakers/flasks/ graduated
cylinders- volume
• Thermometer- temperature
• Clock - time
System Internationale
• SI- standard set of
measurements used
world wide for
consistency.
• Meter, Gram, Liter,
second, Celsius
Conversions
• King Henry Danced Under Dim
Crescent Moonlight.
• _K__
Kilo =1000
|_H__
Hecto =100
|_DA__
Deca = 10
|_U_ Base units m,g,l,
|_D__
Deci =.1
|_C__
Centi =.01
|_M__ Milli =.001
CONVERSIONS BETWEEN
U.S. AND SI UNITS
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1 mi =1.6093 km
1 ft= 0.3048 m
1 inch = 2.54cm
1 gal = 3.8L
1 qt= .95L
1 pt =0.4732 L
1lb =4.45 N
Making Measurements
• Length- meter, measured with a
meter stick, large = kilo
• Volume- amount of space an object
takes up
• Liter for liquids, meters cubed for
solids
• Measure liquids with a graduated
cylinder or ruler or h2o displacement
Making Measurements
• Mass – amount of matter in an
object, unit is grams, measured with
a triple beam balance
• Temperature- amount of heat in an
object, units are Fahrenheit, Celsius,
Kelvin, measured with a
thermometer.
• 30c is hot, 20c is nice, 10c is cold
and 0c is ice
Making Measurements
• Weight – measure of
gravitational pull on an object,
unit is Newton, measured with a
scale.
• Density- mass of an object per
unit of volume. D= M/V, water is
1g/ml, Mass and volume may
change but density does not. SI
units are gram/liter
Ladder Method
1
2
KILO
1000
Units
HECTO
100
Units
3
DEKA
10
Units
DECI
0.1
Unit
Meters
Liters
Grams
How do you use the “ladder” method?
1st – Determine your starting point.
2nd – Count the “jumps” to your ending point.
3rd – Move the decimal the same number of
jumps in the same direction.
CENTI
0.01
Unit
MILLI
0.001
Unit
4 km = _________ m
Starting Point
Ending Point
How many jumps does it take?
4. __. __. __. = 4000 m
1
2
3