AnswersPhysical ScienceEnergy and Energy Resources

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 plus 273
B
degree cap c is equal to open paren 9 fifths times cap k close paren plus 32
C
degree cap c is equal to 5 ninths times open paren cap k minus 32 close paren
D
degree cap c is equal to cap k minus 273
2
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Which action has a positive effect on air resources?

A
using fossil fuels
B
building new homes
C
walking to work or school
D
removing vegetation such as trees
3

An ice cube is dropped into a glass of milk at 20 times degree C Which statement explains the transfer of kinetic energy KE ?

A
Because ice has higher KE than milk, KE is transferred from the milk to the molecules of ice.
B
Because ice has higher KE than milk, KE is transferred from the molecules of ice to the milk.
C
Because milk has higher KE than ice, KE is transferred from the molecules of ice to the milk.
D
Because milk has higher KE than ice, KE is transferred from the milk to the molecules of ice.
4

Which describes one way that renewable resources differ from nonrenewable resources?

A
Renewable resources make cleaner energy.
B
Pollution levels increase with the use of renewable resources.
C
It takes longer to replenish renewable resources.
D
Renewable resources are more easily located and harvested.
5

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

A
water vapor, water, ice
B
water, water vapor, ice
C
water vapor, ice, water
D
ice, water, water vapor
6

Which defines the average kinetic energy of a system’s particles?

A
temperature
B
density
C
volume
D
pressure
7

A 40 kilograms dog is sitting on top of a hillside and has a potential energy of 1 comma 568 cap j What is the height of the hillside? (Formula: cap p cap e is equal to mg h )

A
3 point 9 m
B
4 point 0 m
C
39 point 2 m
D
40 point 0 m
8

Which statement describes one way that wind energy is different from energy from fossil fuels?

A
Wind energy can be reproduced quickly.
B
Wind energy reliability can be inconsistent.
C
Wind energy produces larger quantities of energy.
D
Wind energy produces more pollution.
10

Which is an example of potential energy?

A
an arrow flying at a target
B
a swimmer kicking their legs
C
a car driving on the road
D
a yo-yo in someone’s hand
11

Which best defines energy?

A
pressing to make more compact
B
a type of wave that carries energy through space, where there is almost no matter
C
the ability to do work
D
a disturbance that carries energy form one place to another through matter and space
12

Which describes who will record their measurements in joules?

A
Lily and Henry
B
Astrid, Henry, and Bob
C
Lily, Astrid, Henry, and Bob
D
Astrid and Bob
13

How much thermal energy is generated?

A
1000 J
B
7000 J
C
2000 J
D
15,000 J
14

During which trial was the rock the highest above the ground?

A
1
B
2
C
3
D
4

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