AnswersPhysical ScienceThermal Energy and Heat

Practice Test Answers

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1
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Which shows the formula for converting from kelvins to degrees Celsius?

A
degree cap c is equal to cap k minus 273
B
degree cap c is equal to 5 ninths times open paren cap k minus 32 close paren
C
degree cap c is equal to cap k plus 273
D
degree cap c is equal to open paren 9 fifths times cap k close paren plus 32
4

Which occurs when a warm fluid cools down?

A
Energy is released to the environment.
B
The density of the fluid decreases.
C
Energy is absorbed from the environment.
D
The mass of the fluid decreases.
5

Which indicates that thermal energy is no longer being transferred from boiling water to a mug?

A
The water and the mug are the same temperature.
B
The mug is hotter than the water.
C
The mug and the water lose all thermal energy.
D
The water is hotter than the mug.
6

Which material would result in the least amount of energy transfer?

A
An absorber that is dark in color and rough.
B
A reflector that is light in color and smooth.
C
An absorber that is light in color and rough.
D
A reflector that is dark in color and smooth.
7

Which shows the temperatures of three substances, in order, from greatest to least?

A
water, water vapor, ice
B
water vapor, water, ice
C
water vapor, ice, water
D
ice, water, water vapor
8

Which statement best describes heat and thermal energy?

A
They represent different concepts.
B
Thermal energy is what happens when heat moves between substances.
C
They are different words for the same thing.
D
Heat is what happens when thermal energy stops moving between substances.
9

Which is the correct order of materials in terms of reflectivity, from least to greatest?

A
white paper, beige sand, brown soil, black asphalt
B
beige sand, white paper, black asphalt, brown soil
C
black asphalt, brown soil, beige sand, white paper
D
brown soil, beige sand, white paper, black asphalt

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