Energy Quizziz 1

This steam locomotive transforms energy from fuel into energy to propel it forward and transfers energy to the train cars it pulls. Based on this, how is energy used in a steam locomotive?

• It transforms fuel energy into motion and transfers energy to train cars.

• It stores energy without using it.

• It only uses electrical energy.

• It does not transfer energy to train cars.

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One way energy can change an object is:

• by changing its color

• by changing its shape

• by changing its smell

• by changing its taste

Think about the chain of dominoes as a system. What are the system’s inputs and outputs?

• The input is the force applied to the first domino, and the output is the falling of the last domino.

• The input is the color of the dominoes, and the output is their arrangement.

• The input is the number of dominoes, and the output is the height of the stack.

• The input is the sound made by the dominoes, and the output is the speed of the fall.

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How is the process started by the tiny domino at the beginning of the chain able to result in the toppling of the giant domino at the end of the chain?

• Because each domino is slightly larger than the previous one, allowing the energy to build up and topple the giant domino at the end.

• Because the tiny domino is made of a special material that can knock over any size domino.

• Because the giant domino is already unstable and falls on its own.

• Because the dominoes are all the same size and fall at the same rate.

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The energy used by a construction crane to move a steel beam comes from which of the following sources?

• The crane's fuel or electricity

• The wind

• The steel beam itself

• The ground beneath the crane

Select the correct statements about the robots' work:

• Robot A did the greatest amount of work.

• Robot B did the least amount of work.

• Robot C and Robot D did the same amount of work.

• All robots did different amounts of work.

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NGSS.MS-PS3-5

Which of the following best explains the differences between the everyday and the scientific uses of the terms energy and work?

• In everyday use, energy and work are often used interchangeably to mean effort, while in science, energy is the ability to do work and work is the transfer of energy.

• Both everyday and scientific uses define energy and work as the same thing.

• In science, energy and work are unrelated concepts, but in everyday use, they are the same.

• Everyday use defines energy as force, while science defines work as rest.

In your neighborhood, people are setting up a downhill soapbox derby race. As a safety measure, bales of hay are set up at the bottom of the hill as a barricade to stop cars and drivers. At what point on the car’s path will it have the most kinetic energy?

• at the very top of the hill

• at the midpoint of the hill

• at the very bottom of the hill

• after it collides with the hay

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Engineer It: Your job is to design the barricade for the downhill soapbox derby. How might your design need to change if heavier cars were used?

• The barricade would need to be stronger to stop heavier cars.

• The barricade could be made lighter for heavier cars.

• The barricade design would not need to change.

• The barricade should be removed for heavier cars.

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How do the potential energy and kinetic energy of a domino change as it topples over? Record your evidence.

• Potential energy increases and kinetic energy decreases.

• Potential energy decreases and kinetic energy increases.

• Both potential and kinetic energy increase.

• Both potential and kinetic energy decrease.

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