Energy Conservation - Unit 3 Lesson 3

What is the Law of Conservation of Energy?

• A) Energy can be created and destroyed

• B) Energy cannot be created or destroyed, only transformed

• C) Energy is always lost in transformations

• D) Energy is only used in machines.

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Fill in the blank: The process of changing energy from one form to another is called ________.

• Energy transfer

• Energy input

• Energy transformation

• Energy output

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When you sit by a fireplace, the heat is transferred from the fire to you by ________, making you feel warmer.

• conduction

• convection

• radiation

• insulation

When you turn on your computer or TV, the electrical energy is transformed into heat, light, and ______.

• sound energy

• kinetic energy

• potential energy

• chemical energy

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What is an energy chain?

• A series of energy transformations

• A type of electrical circuit

• A method of conserving energy

• A type of renewable energy.

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In the energy chain diagram, electrical energy is transformed into ________ energy in a lamp.

• A) Heat

• B) Light

• C) Sound

• D) Movement

What type of energy is stored in the battery of a music device?

• Electrical energy

• Chemical energy

• Kinetic energy

• Sound energy

In the energy chain of a music device, chemical energy is transformed into electrical energy, then into kinetic energy, and finally into _______.

• Light energy

• Thermal energy

• Sound energy

• Nuclear energy

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What does the Law of Conservation of Energy state?

• A) Energy can be created and destroyed.

• B) Energy is not created or destroyed, but transformed from one form to another.

• C) Energy is only created.

• D) Energy is only destroyed.

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In a closed system, energy is not created or destroyed, but is ________ from one form to another.

• eliminated

• transformed

• created

• destroyed

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