Practice Test

Question 1

Mateo’s parents are thinking about investing money to help develop a new fusion power plant. Which issue is most important to consider before making the investment?

Revolt · Accepted Answer

Fusion requires high temperatures and pressures, so how have they reduced the energy cost for it?

Question 2

Doug is doing work. Without knowing exactly what he is doing, which can be said about the work he is doing?

Revolt · Accepted Answer

Energy is transferred.

Question 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 ?

Revolt · Accepted Answer

Because milk has higher KE than ice, KE is transferred from the milk to the molecules of ice.

Question 4

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 )

Revolt · Accepted Answer

4 point 0 m

Question 5

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

Revolt · Accepted Answer

water vapor, water, ice

Question 6

Which best defines energy?

Revolt · Accepted Answer

the ability to do work

Question 7

Which best describes a difference between energy transformations in power plants and dams?

Revolt · Accepted Answer

Only power plants use fossil fuels to transform energy.

Question 8

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

Revolt · Accepted Answer

temperature

Question 9

Which compares the problems associated with radioactive waste created from generating electricity using fusion reactions to waste created from generating electricity using fission reactions?

Revolt · Accepted Answer

The radioactive waste from fusion reactions becomes less hazardous much sooner than the waste from fission reactions.

Question 10

Which is an example of potential energy?

Revolt · Accepted Answer

a yo-yo in someone’s hand

Practice Test Answers

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