Unit Review

Question 2 of 25

What tools would you need to use to find out how the mass of these two boxes affects the distance they will slide down a ramp?

A. Thermometer, ruler

B. Balance, ruler

C. Stopwatch, ruler

D. Balance, string

Question 3 of 25

Everything that happens in the universe, including sprouting seeds, involves energy. The unsprouted seed in the animation below is an example of __________ energy.

Use the animation to answer this question.

A. Kinetic

B. Potential

Question 1 of 25

The table above shows the distance traveled when four different toy cars were released at the same point on a ramp. The difference in the distance the cars traveled was probably caused by differences in ______________.

A. Force exerted

B. Surface friction

C. Air resistance

D. The cars' mass

Question 4 of 25

When a seed sprouts, it converts stored chemical energy into _____________.

Use the animation to answer the question.

A. Mechanical energy

B. Another form of chemical energy

C. Thermal energy

D. Photosynthesis

Question 5 of 25

Fuel cells powered by plankton from the seabed can be used to operate instruments that monitor ocean currents and water temperature. These fuel cells get their energy by converting ______________.

A. Chemical energy to electrical energy

B. Electrical energy to mechanical energy

C. Hydroelectric energy to geothermal energy

D. Mechanical energy to chemical energy

Question 6 of 25

At which point in the image above is kinetic energy the greatest?

A. 1

B. 2

C. 3

D. 4

Question 7 of 25

Friction between a car's tires and the road releases ______________ energy.

A. Potential

B. Electrical

C. Thermal

D. Nuclear

Question 8 of 25

Using natural gas or propane to propel an automobile is an example of converting _ energy to __energy.

A. Chemical / mechanical

B. Radiant / mechanical

C. Electrical /chemical

D. Mechanical / chemical

Question 9 of 25

Which car above has more potential energy?

A. The car on ramp 1

B. The car on ramp 2

C. Both cars have the same potential energy.

Question 11 of 25

What is happening to the potential and kinetic energy of the pendulum in this diagram as it swings from position 3 towards position 4?

A. Kinetic energy is increasing, and potential energy is decreasing.

B. Potential and kinetic energy are both increasing.

C. Potential and kinetic energy are both decreasing.

D. Kinetic energy is decreasing, and potential energy is increasing.

Question 12 of 25

The pendulum above illustrates which form of energy?

A. Radiant

B. Mechanical

C. Radial

D. Electrical

Question 14 of 25

Electromagnetic radiation emitted by the sun passes through the atmosphere, is absorbed by material on the earth's surface, and re-radiates back to space as ________.

A. Ultraviolet radiation

B. Infrared radiation

C. Visible light

D. Gamma radiation

Question 10 of 25

What is the relationship between height and energy?

A. The more acute the angle of inclination, the greater the potential energy.

B. As height increases, so does the amount of kinetic energy.

C. As height increases, so does the amount of potential energy.

D. As height increases, so do both kinetic and potential energy.

Question 15 of 25

The total amount of energy in a system remains constant, although energy can be _________________.

A. Converted into unwanted energy or waste energy on its way to doing work

B. Changed from one form to another

C. Transferred from one object to another

D. All of the above

Question 16 of 25

Atoms and molecules of any substance are always in motion. The movement of the molecules in the diagram at right represents:

A. Thermal energy

B. Mechanical energy

C. Chemical energy

D. Both A and B

Question 17 of 25

Radiation treatment for cancer patients is an example of ____________________ energy.

A. Chemical

B. Nuclear

C. Electrical

D. Mechanical

Question 18 of 25

Which of the following represents the energy pathway in a toaster?

A. Chemical energy -> mechanical energy -> thermal (radiant) energy

B. Thermal energy -> mechanical energy -> thermal (radiant) energy

C. Electrical energy -> mechanical energy -> chemical energy

D. Electrical energy -> mechanical energy -> thermal (radiant) energy

Question 19 of 25

Not all the energy used by the toaster went into toasting the bread. What happens to the rest of the energy?

A. The coils in the toaster absorb the excess heat.

B. The excess thermal energy is transferred to the surrounding air.

C. The excess energy was used to pop the toast back out of the toaster.

D. The excess energy was lost due to friction.

Question 20 of 25

Which tools are needed to find the energy lost due to friction when a marble travels along the U-shaped track above?

A. Balance, ruler, and stopwatch

B. Thermometer and ruler

C. Stopwatch and chalk

D. Ruler, stopwatch and tape

Question 21 of 25

In an experiment similar to the one above, Galileo determined that _____________.

A. If friction were zero, the marble would roll back and forth endlessly

B. The total energy in a system equals the sum of its potential and kinetic energy

C. Energy can be converted back and forth from one form to another

D. All of the above

Question 22 of 25

Which metric units are used to measure potential energy?

A. Meters

B. Newtons

C. Joules

D. Watts

Question 23 of 25

Nuclear energy is released _________________.

A. When uranium nuclei are split

B. When hydrogen nuclei combine

C. During fission and fusion

D. All of the above

Question 24 of 25

The generation of electricity from coal is an example of an energy control system. Which statement best describes an energy control system?

A. A system that balances energy input and output

B. A system that controls the sources and conversions of energy for a specific purpose

C. A system that elevates one form of energy to a higher level

D. A system that converts a fossil fuel to electricity

Question 25 of 25

Which of the following is an example of an energy control system?

A. A steam locomotive

B. An engine

C. An impoundment of water behind a dam

D. A battery

Question 13 of 25

Which statement is true about the energy of the pendulum as it moves from position 1 to position 4?

A. The pendulum gains energy.

B. The pendulum loses energy.

C. The total amount of energy remains the same, but its form changes.

D. The total amount of energy remains the same, and its form does not change.

Unit Review

Question 2 of 25

What tools would you need to use to find out how the mass of these two boxes affects the distance they will slide down a ramp?

Question 3 of 25

Everything that happens in the universe, including sprouting seeds, involves energy. The unsprouted seed in the animation below is an example of __________ energy. Use the animation to answer this question.

Question 1 of 25

The table above shows the distance traveled when four different toy cars were released at the same point on a ramp. The difference in the distance the cars traveled was probably caused by differences in ______________.

Question 4 of 25

When a seed sprouts, it converts stored chemical energy into _____________. Use the animation to answer the question.

Question 5 of 25

Fuel cells powered by plankton from the seabed can be used to operate instruments that monitor ocean currents and water temperature. These fuel cells get their energy by converting ______________.

Question 6 of 25

At which point in the image above is kinetic energy the greatest?

Question 7 of 25

Friction between a car's tires and the road releases ______________ energy.

Question 8 of 25

Using natural gas or propane to propel an automobile is an example of converting ___________ energy to ____________energy.

Question 9 of 25

Which car above has more potential energy?

Question 11 of 25

What is happening to the potential and kinetic energy of the pendulum in this diagram as it swings from position 3 towards position 4?

Question 12 of 25

The pendulum above illustrates which form of energy?

Question 14 of 25

Electromagnetic radiation emitted by the sun passes through the atmosphere, is absorbed by material on the earth's surface, and re-radiates back to space as ________.

Question 10 of 25

What is the relationship between height and energy?

Question 15 of 25

The total amount of energy in a system remains constant, although energy can be _________________.

Question 16 of 25

Atoms and molecules of any substance are always in motion. The movement of the molecules in the diagram at right represents:

Question 17 of 25

Radiation treatment for cancer patients is an example of ____________________ energy.

Question 18 of 25

Which of the following represents the energy pathway in a toaster?

Question 19 of 25

Not all the energy used by the toaster went into toasting the bread. What happens to the rest of the energy?

Question 20 of 25

Which tools are needed to find the energy lost due to friction when a marble travels along the U-shaped track above?

Question 21 of 25

In an experiment similar to the one above, Galileo determined that _____________.

Question 22 of 25

Which metric units are used to measure potential energy?

Question 23 of 25

Nuclear energy is released _________________.

Question 24 of 25

The generation of electricity from coal is an example of an energy control system. Which statement best describes an energy control system?

Question 25 of 25

Which of the following is an example of an energy control system?

Question 13 of 25

Which statement is true about the energy of the pendulum as it moves from position 1 to position 4?

Your Review Results

Everything that happens in the universe, including sprouting seeds, involves energy. The unsprouted seed in the animation below is an example of __________ energy.

Use the animation to answer this question.

When a seed sprouts, it converts stored chemical energy into _____________.

Use the animation to answer the question.

Using natural gas or propane to propel an automobile is an example of converting _ energy to __energy.