New Science Review 5th Grade

A student uses a set of headphones to listen to music. Which of these objects uses the same source of energy as the headphones?

• A flute using wind energy

• A piano using mechanical energy

• A keyboard using electrical energy

• A teapot using thermal energy

Rube Goldberg was an artist who drew cartoons that showed a very complicated way to do a simple task. The picture shows a cartoon like the ones Goldberg drew. Which form of energy is used to turn on the switch?

• Light energy

• Thermal energy

• Electrical energy

• Mechanical energy

A class is learning about states of matter. The teacher shows the students how to set up the investigation shown in the diagram. What kinds of energy are needed in this investigation to change the state of matter of the candle?

• Light, mechanical, and thermal

• Electrical and thermal

• Mechanical, light, and electrical

• Thermal and mechanical

Which object requires only mechanical energy to perform its main function?

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An old-fashioned metal toy is shown below. When the candle is lit, the carousel of horses begins to turn. Which of these correctly describes the energy that makes the carousel turn?

• Heat from the candle produces currents of warm air.

• Heat from the candle produces electrical energy.

• Light from the candle produces mechanical energy.

• Light from the candle produces wind currents.

Many people ride a bicycle for fun and exercise. Some people ride a bicycle to work because it saves money and benefits the environment by reducing the use of fossil fuels. Which of these is not an example of the bicycle using mechanical energy?

• The pedals, gears, and chain help turn the wheels.

• The wheels turn when the bicycle moves.

• The front wheel guides the bicycle as it moves.

• The reflector allows the bicycle to be seen at night.

Water flows through turbines in dams like the one shown below. The flowing water makes the turbines spin.

• Light energy

• Thermal energy

• Sound energy

• Mechanical energy

Most cars have lights, power locks, radios, and other equipment that use electricity. Electric circuits power this equipment. Each circuit has a fuse that completes it. The picture below shows one type of fuse a car may have. Which of these describes one thing that could happen if the wire in a car fuse burns out?

• The car’s lights will burn brighter.

• The car’s radio will not work.

• The car’s turn signal will blink too slowly.

• The car’s power windows will open faster.

The diagram shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut at the point shown by the arrow?

• 0

• 1

• 2

• 3

A student builds a circuit made up of a battery, two lightbulbs, and a switch, as shown below. What will the student most likely observe in this circuit?

• Lightbulb 1 and Lightbulb 2 will both be on.

• Lightbulb 1 will be off, but Lightbulb 2 will be on.

• Lightbulb 1 and Lightbulb 2 will both be off.

• Lightbulb 1 will be on, but Lightbulb 2 will be off.