Chapter 7 Test Review- 4th grade

Where did energy come from?

• An explosion in space created energy.

• God created the universe and the energy in it.

• Many hot gases mixed together to create energy.

The roller coaster at the top of the hill is an example of which kind of energy?

• kinetic energy

• potential energy

• thermal energy

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This roller coaster moving down the hill is an example of which kind of energy?

• kinetic energy

• potential energy

• thermal energy

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A toy truck rolls down a slope. As the truck rolls down the slope, what happens?

• Potential energy changes to kinetic energy and moves the truck. The truck gains kinetic energy as it rolls.

• Neither kinetic nor potential energy changes as the truck rolls down the slope.

• Potential energy changes to kinetic energy as the truck rolls. The truck also gains potential energy as it rolls.

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The book resting on the edge of the table has potential energy because the book could fall.

The underlined part of the sentence is the _______________.

• cause

• effect

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The ability to do work is force.

• True

• False

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The stored energy in an object is potential energy.

• True

• False

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The energy that an object has due to its motion is kinetic energy.

• True

• False

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Mallory pushed a marble down the slope of the driveway. How did that change the marble's energy?

• The applied force to the marble increases its weight, which increases its kinetic energy.

• The applied force to the marble decreases its motion, which decreases its kinetic energy.

• The applied force to the marble increases its motion, which increases its kinetic energy.

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Remi threw a baseball and a small rubber ball with the same applied force at the tower of blocks. Which ball will knock down more blocks?

• The baseball's weight gives it more kinetic energy to knock down more blocks.

• The rubber ball's weight gives it more kinetic energy to knock down more blocks.

• The rubber ball's speed gives it more kinetic energy to knock down more blocks.

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