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# Ch.5 L3: Mass and Temperature

pages 58-59
by

## Cathy Myers

on 8 October 2014

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#### Transcript of Ch.5 L3: Mass and Temperature

Mass and Temperature
mass = a measure of the amount of matter of an object
An object's weight is NOT the same as its mass. Weight is dependent on the strength of gravity but mass is not.

You might weigh 30 kg (66 lbs) on Earth but because space has no gravity, you would weigh 0 kg (0 lbs) there but your mass would still be 30 kg.

A body's mass on Earth stays the same in space.

Mass is weighed in kilograms or grams.
Weight is measured in pounds and ounces.
Units of Mass/Weight
Metric Units of Mass
Temperature
a measure of how much thermal energy an object has

atoms & molecules of object w/ high temperature are moving faster than atoms & molecules w/ low temperature
Tools for Measuring Mass/Weight:
spring scale
balance scale
Pages 58-59
weight = a measure of the pull of gravity on an object
Customary Units of Weight
1,000 mg = 1 g
1,000 g = 1 kg
16 ounces (oz) = 1 pound (lb)
2,000 lbs = 1 ton (T)
For water: 1 = 1 gram = 1 mL
Tool for Measuring Temperature:
thermometer
Units of Temperature:
Metric:
degree Celsius
-> freezing point of water = 0 degrees Celsius
-> boiling point of water = 100 degrees Celsius
-> avg. body temperature = 37 degrees Celsius
Customary:
degree Fahrenheit
-> freezing point of water = 32 degrees Fahrenheit
-> boiling point of water = 212 degrees Fahrenheit
-> avg. body temperature = 98.6 degrees Fahrenheit
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