Energy Unit Review

Jason put an apple on top of an ice pack in his lunch bag. By lunchtime, the energy of the ice pack had increased. What must be true of the energy of the apple?

• the energy of the apple stays the same

• the energy of the apple increased while the energy of the plate increased

• the energy of the apple decreased while the energy of the ice pack decreased

• the energy of the apple decreased while the energy of the ice pack increased

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NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

The diagram in the image shows two stacks of containers before the containers touch. After the top containers have been touching the bottom containers for a while, which top container will be cooler, and why?

• Top Container 1 will be cooler than Top Container 2 because less energy has to transfer for the molecules to reach the same temperature as the molecules of the bottom container.

• Top Container 2 will be cooler than Top Container 1 because it started with more total energy, so less energy has to transfer for both containers in the stack to reach the same total energy.

• Top Container 2 will be cooler than Top Container 1 because the energy transferred to it is spread out over more molecules.

• Both top containers will be the same temperature because both bottom containers have the same amount of energy to transfer.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Two pitchers of tea were left out on the counter. One pitcher was full of ice cold tea while the other was only half full of ice cold tea. After an hour, the half-full pitcher of tea was warmer than the full pitcher of tea. Which statement best explains why the half-full pitcher would be warmer?

• A larger amount of energy was transferred to the same amount of matter.

• A smaller amount of energy was transferred to the same amount of matter.

• The same amount of energy was transferred to a smaller amount of matter.

• The same amount of energy was transferred to a larger amount of matter.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

What do the numbers in the circles represent?

• objects

• energy

• atoms

• molecules

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NGSS.MS-PS1-1

The table shows the estimated energy production (in quadrillions of BTUs) from fossil fuels over a 20-year period.

Which conclusion is best supported by the data?

• Dependency on oil has increased, therefore energy production from oil is increasing.

• Dependency on oil has increased, therefore energy production from natural gas is decreasing.

• Dependency on coal has increased, therefore energy production from coal is increasing.

• Dependency on coal has increased, therefore energy production from natural gas is decreasing

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NGSS.HS-ESS3-1

Which practice should be used with nonrenewable energy resources until affordable alternate energy options are developed?

• depletion

• stockpiliing

• preservation

• conservation

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NGSS.MS-ETS1-1

According to the chart, what percentage of energy use was renewable?

• 15%

• 7%

• 85%

• 30%

A student builds an electric circuit to play a radio. The circuit contains a radio, wires and a hand-held electric generator. When he turns the handle on the generator the radio begins to play.

Which of the following best explains how the radio gets the electric energy needed to produce sound energy?

• The generator transforms potential energy into electric energy.

• The generator transforms thermal energy into electric energy.

• The generator transforms chemical energy into electric energy.

• The generator transforms kinetic energy into electric energy.

Tags

NGSS.MS-PS3-5

In an investigation, a ball was released from the three difference positions shown. The speed of the ball was measured at the bottom of the ramp, after the ball was released from each position. Why was the speed greatest when the ball was released from the top position "1"?

• The ball lost energy to the environment as it rolled down the ramp.

• The ball had more potential energy at the top of the ramp.

• The ball gained potential energy as it rolled down the ramp.

• The ball had more kinetic energy at the top of the ramp.

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NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What energy transformation occurred when he released the propeller?

• Gravitational potential energy transformed into kinetic energy.

• Elastic potential energy transformed into kinetic energy.

• Chemical kinetic energy transformed into spinning kinetic energy.

• Elastic kinetic transformed into spinning kinetic energy.

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NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5