UNIT 7: Energy

Energy is .................. to do work.

Which of the following is the main source of energy?

• Battery

• Sun

• Fossil fuels

• Waves

What is the energy transformation that happens in this appliance?

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The information describes one form of energy.

What is this form of energy?

• Chemical energy

• Light energy

• Kinetic energy

• Nuclear energy

Which of the following activities has potential energy?

• Stretching a rubber band

• A boy running

• An iron in use

• A radio broadcast

Which of the following is true?

• Renewable energy source: Fossil fuel

  Non-renewable energy source: Biomass

• Renewable energy source: Waves

  Non-renewable energy source: Sun

• Renewable energy source: Sun

  Non-renewable energy source: Wind

• Renewable energy source: Biomass

  Non-renewable energy source: Nuclear

The dynamo of a bicycle.

What form of energy is produces?

• Sound energy

• Electrical energy

• Heat energy

• Potential energy

Which of the following devices has the same energy transformation as this appliances?

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This statement explains about a type of energy.

Which of the following could possibly be the energy?

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Non-renewable energy will be used up quickly if it is not used wisely. What is the importance of using energy sources wisely?

• To ensure the stability of price of necessities

• To ensure the level of health is always satisfactory

• To guarantee that the supply of energy is enough for now

• To guarantee that the supply of energy is enough for the use of coming generation