Energy Causes Change

Why is a light bulb warm after it has been on for a few hours?

• It has produced light energy.

• It has produced mechanical energy.

• It has produced thermal (heat) energy).

• It has produced potential energy.

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What is the law of conservation of energy?

• Energy can be destroyed and created.

• Objects in motion stay in motion until a force is apllied.

• Energy cannot be created or destroyed, it can only change form.

• Energy can be stored in an object.

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A light bulb can produce light and thermal energy.

• True

• False

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NGSS.HS-PS3-4

Potential energy can be converted into kinetic energy.

• True

• False

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An object in motion does not change positiion.

• True

• False

Energy is required to stop an object in motion.

• True

• False

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As a pencil falls off a desk, its potential energy is being changed to kinetic energy.

• True

• False

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If a person kicks a soccer ball, then ___________________.

• the ball will not move

• the ball will not change direction

• no energy is transferred to the ball

• energy is transferred to the ball

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Which of the following is an example of kinetic energy being converted to potential energy.

• A car driving stops at a red light.

• A pencil sits on a desk.

• A water bottle is on a shelf.

• A sneaker is on the ground.

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NGSS.MS-PS3-5

Which of the following is an example of potential energy being converted into kinetic energy?

• A student is at the top of a slide.

• A roller coaster increases speed as it goes down a hill.

• A plate sits on a table.

• A bicycle is leaning against a wall.

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NGSS.MS-PS3-5

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