Answers FL-2002070-MJ Comprehensive Science 2Rocks and the Rock Cycle

Potential and Kinetic Energy Answers

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The sun emits electromagnetic waves at many frequencies, but mostly in the infrared, visible, and ultraviolet spectrums. What kind of energy is this?

nuclear

radiant

thermal

chemical

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

chemical energy

electrical energy

nuclear energy

mechanical energy

Abin is doing work by lifting a bowling ball. Which statement could be made about the energy in this situation?

Energy is being transferred from the ball to his arm muscles.

Energy is being transferred from his arm muscles to the ball.

Energy would be recorded in units of hertz and power.

Energy would change from potential to chemical.

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."

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.

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.

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.

Gabriel is performing an experiment in which he is measuring the energy and work being done by a ball rolling down a hill. Which statement best describes Gabriel’s measurements?

They will remain constant.

They will both be recorded in joules.

They will both be recorded in hertz.

They will involve compressions.

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.

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Potential and Kinetic Energy Answers

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