Understanding Energy Conservation Concepts

Which law states that energy cannot be created or destroyed, only transformed from one form to another?

• Law of Gravity

• Law of Conservation of Energy

• Law of Motion

• Law of Thermodynamics

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NGSS.HS-PS3-2

NGSS.HS-PS3-4

What type of energy is stored in a stretched rubber band?

• Kinetic energy

• Potential energy

• Thermal energy

• Electrical energy

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NGSS.MS-PS3-2

Which of the following is an example of kinetic energy?

• A book on a shelf

• A moving car

• A battery

• A stretched bow

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NGSS.MS-PS3-5

NGSS.MS-PS3-1

What is the main energy transformation that occurs when you turn on a flashlight?

• Chemical to electrical to light

• Electrical to chemical to sound

• Light to chemical to electrical

• Sound to electrical to chemical

What type of energy does a ball have at the top of a hill before it starts rolling down?

• Kinetic energy

• Potential energy

• Thermal energy

• Sound energy

Tags

NGSS.MS-PS3-2

If a pendulum swings back and forth, what two types of energy are mainly involved in its motion?

• Sound and thermal energy

• Potential and kinetic energy

• Electrical and chemical energy

• Nuclear and magnetic energy

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NGSS.MS-PS3-5

NGSS.MS-PS3-2

NGSS.MS-PS3-1

A student drops a ball from a height. Which energy transformation occurs as the ball falls?

• Kinetic to potential energy

• Potential to kinetic energy

• Chemical to electrical energy

• Thermal to sound energy

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NGSS.MS-PS3-5

NGSS.MS-PS3-2

NGSS.MS-PS3-4

A student lifts a box from the floor to a shelf. What type of energy does the box gain?

• Kinetic energy

• Potential energy

• Thermal energy

• Sound energy

Tags

NGSS.MS-PS3-2

A roller coaster car is at the top of a hill. Describe how its energy changes as it moves down the hill and then up the next hill.

• Its potential energy decreases as it moves down, converting to kinetic energy, then increases again as it moves up the next hill.

• Its kinetic energy decreases as it moves down, converting to potential energy, then decreases again as it moves up the next hill.

• Its thermal energy increases as it moves down, then decreases as it moves up.

• Its electrical energy increases as it moves down, then decreases as it moves up.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

A student observes a swinging pendulum and notices it eventually stops. Using the law of conservation of energy, explain why the pendulum stops.

• Energy is destroyed as the pendulum swings.

• Energy is transformed into other forms, such as thermal energy due to air resistance and friction.

• The pendulum loses all its energy.

• The pendulum gains energy from the air.

Tags

NGSS.MS-PS3-5