3.7 Where does energy go

3.7 Where does energy go

7th Grade

6 Qs

quiz-placeholder

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3.7 Where does energy go

3.7 Where does energy go

Assessment

Quiz

Science

7th Grade

Hard

Created by

Lee Peng TUNG

FREE Resource

6 questions

Show all answers

1.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

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How much energy is transformed into heat?

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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What happens to the sound energy?

The sound energy is eventually lost to the surroundings as heat.

The sound energy is converted into light energy.

The sound energy is stored in the object forever.

The sound energy disappears without any effect.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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Eventually, what will happen to all of the energy transferred by the kettle?

All of the energy will eventually be dissipated to the surroundings.

All of the energy will be stored inside the kettle forever.

The energy will disappear completely.

The energy will be converted into light only.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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Sankey diagrams are used to show the proportions of the different types of energy involved in a transfer. Complete the following Sankey diagrams.

Electrical energy 100J → Light energy .........J + Heat energy 25 J

100

75

50J

25

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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Gravitational energy stored in the child at the top of the slide is transferred as mechanical work done to speed up and to do work against friction. The result of this is a shift of energy from the gravitational potential energy store to the kinetic energy store and the internal energy store (raising the temperature of the child and the slide). Complete the Sankey diagram.

200 J

400 J

600 J

800 J

6.

FILL IN THE BLANK QUESTION

1 min • 1 pt

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Determine the amount of wasted energy.