Energy Test

A moving object will have more energy when the object…

• moves faster

• Stops moving

• Changes direction

• Loses mass

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Four identical balls are rolled from the same position at the same time. The illustration shows each ball’s starting and ending after rolling for 2 seconds. Which ball had the most energy?

• 1

• 2

• 3

• 4

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Two model trains are running on tracks that are lined up next to each other. The two trains are not moving at the same speed. What would cause one train to move faster than the other?

• The slower train’s cars have less mass

• The faster train has more energy

• The faster train has a wider track

• The slower train has an older engine

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Which animal shown on the chart uses the least amount of energy while running?

• Cheetah

• Rabbit

• Elephant

• Chicken

Mrs. Stone’s class did an experiment to determine from what height on a ramp a toy carhad the most energy. The results are shown in the table below. From which interval did the car have the most energy and why?

• The car had the most energy at 5 cm. because it went the least distance and had less

  speed.

• The car had the most energy at 15 cm. because it went the greatest distance so it had

  the greatest speed.

• The car had the most energy at 20 cm. because it went the greatest distance so it had

  the greatest speed.

• The car had the same amount of energy at all intervals because the mass of the car was

  the same.

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Plants make their own food through photosynthesis using energy from the sun.

What type of energy transformation is occurring in the plant?

• light energy is becoming mechanical energy

• thermal energy is becoming chemical energy

• thermal energy is becoming electrical energy

• light energy is becoming chemical energy

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Angela has a Slinky toy made out of a coil of wire. She places the toy at the top of some

stairs. The toy can travel down each step, end-over-end. Which type of energy does the

toy have when it is placed at the top of the stairs?

• Electrical Energy

• Kinetic Energy

• Magnetic Energy

• Potential Energy

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A sewing machine uses a battery to make a needle move. The needle goes up

and down quickly. Which energy transformation is taking place?

• electrical to chemical

• chemical to mechanical

• mechanical to electrical

• electrical to sound

This picture shows parts of a flashlight. Which part of the flashlight stores energy to light the bulb?

• case

• mirror

• batteries

• spring

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The ram on a crane uses the force of kinetic energy to push a spike into the ground.

From which position should the ram be released to have the greatest kinetic energy

when it hits the spike?

• 1

• 2

• 3

• 4

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