Answers TX-Integrated Physics and Chemistry B-CRUnit Test

Potential and Kinetic Energy Answers

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Four people make observations recorded in the table.Which best describes what the observations have in common?

They involve nuclear energy.

They involve radiant energy.

They involve changes in waves.

They involve changes in energy.

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Johanna is studying what happens to the energy as a ball rolls down a ramp. What is one form of energy that she is studying?

gravitational potential energy

electrical energy

chemical energy

elastic potential energy

Which statement best describes the work and energy in these examples?Example 1: Running a car requires gas.Example 2: Humans require food to live.

The gas and food are examples of energy.

The gas and food are examples of work.

The gas and humans are examples of work.

The food and car are examples of energy.

If Jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, what is being done?

compression

work

radiation

energy creation

What is the energy of an object because of its potential and kinetic energies?

chemical energy

electrical energy

nuclear energy

mechanical energy

When Anna eats an apple, the sugars in that apple are broken down into the substance called glucose. Glucose is then burned in her body for energy. One of the body parts that needs this energy is the heart, which beats due to electrical impulses. A byproduct of this glucose breakdown is the heat that warms her body and is later released.

Mechanical energy is converted to kinetic energy, which is then converted to potential energy.

Chemical energy is converted to thermal energy and electrical energy.

Electrical energy is converted to chemical energy and thermal energy.

Mechanical energy is converted to potential energy which is then converted to kinetic energy.

Shondra takes notes in class.

Switch "the energy of moving objects" and "the ability to do work" and place chemical energy under "Forms of energy."

Switch "the energy of flowing electrical charges" and "the energy in a spring" and place kinetic energy under "Forms of energy."

Switch "the energy in the nuclei of atoms" and "the energy stored in objects'" and place nuclear energy under "Main categories of energy."

Switch "the energy from the Sun" and "the energy of a rock on a hill" and place electrical energy under "Main categories of energy."

Which statement best defines the relationship between work and energy?

Work can transfer energy between objects and increase radiant energy.

Work can transfer energy between objects and cause a change in the form of energy.

Work can transfer energy between objects and decrease nuclear energy.

Work can transfer energy between objects and cause a change in the amount of total energy.

How does work affect energy between objects so it can cause a change in the form of energy?

Work transfers energy.

Work changes energy.

Work increases energy.

Work decreases energy.

Which term describes the energy an object has because of its motion?

potential

nuclear

kinetic

thermal

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Potential and Kinetic Energy Answers

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