Forms of Energy Pre-Test

The picture shows what happens when light shines on a tank of water. What property of light does this picture show?

• Light travels in a straight line forever.

• Light gets brighter the farther it travels.

• Light travels in a straight line until it strikes an object or substance.

• Light gets brighter when it reflects off smooth surfaces.

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Lisa stirs a cup of hot chocolate, which causes a metal spoon to get warm. Which statement best explains why the spoon gets warm?

• Heat energy transfers from the hot liquid to the spoon.

• Heat energy transfers from the metal spoon to the hot liquid.

• Heat energy transfers from the air to the hot liquid, and then to the spoon.

• Heat energy transfers from the hot liquid to the cup, and then to the spoon.

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Johnny and his dad are traveling in a sailboat along the St. Johns River. Johnny notices that the sailboat has no engine, and wonders what is causing the boat to move. Which of the following ideas Johnny has come up with is correct?

• The river current pushes on the sail causing the boat to move.

• The weight of the boat’s sail tilts the boat forward, causing the boat move.

• Air moving in the atmosphere transfers its energy to the boat’s sail causing the boat to move.

• Earth’s magnetic field interacts with the metallic lining of the boat’s sail, and the resulting force causes the boat to move.

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What is an example of Chemical Energy?

• A battery

• A moving fan

• A trumpet

• A lamp

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Which explains why the fork looks different under water?

• Light is refracted at an angle

• The wavelength of light lengthens

• Light cannot pass through the glass

• The amount of light increases when going through water

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Which of these explains why a light bulb turns off when it is unplugged?

• The electricity is stored in the wires.

• The electricity is returning to the wires.

• The flow of electricity to the light bulb stops.

• The flow of electricity to the light bulb changes direction.

Which of these objects best demonstrates energy?

• a car being driven

• a vase holding flowers

• a book sitting on the floor

• a balloon floating on water

Mrs. Alvarez brought wind chimes to her science class. The wind chimes come with either long tubes or short tubes, as shown below.

• The sound from each long tube is softer than the sound from each short tube.

• The sound from each long tube is louder than the sound from each short tube.

• The sound from each long tube has a lower pitch than the sound from each short tube.

• The sound from each long tube has a higher pitch than the sound from each short tube.

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Which is an example of electrical energy being transformed into light energy?

• turning on a lamp

• plugging in a ceiling fan

• lighting a candle with a match

• bringing a pot of water to boiling

Which of these does NOT show energy that creates change?

• a boy pushing a bowling ball

• a bowling ball falling off a shelf

• a bowling ball hitting another ball

• a bowling ball sitting on the shelf

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