Conservation of Energy

The law of conservation of energy describes how the amount of total energy can change in a closed system. Which of these statements correctly describes this law?

• The amount of kinetic energy in a system is a constant value.

• Energy can be converted from one form into another, but it cannot be created or destroyed.

• An object can have potential energy or kinetic energy, but not both at the same time.

• The amount of energy created when an object moves is equal to the energy destroyed when it stops moving.

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

The International Space Station revolves around Earth at a constant distance above Earth's surface. Which of the following claims about the energy of the station is true?

• It has no energy because it is stationary.

• It has potential energy but does not have kinetic energy.

• It has kinetic energy but does not have potential energy.

• It has both potential energy and kinetic energy.

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NGSS.MS-PS3-1

NGSS.MS-PS3-2

Which of the following demonstrates an airplane converting kinetic to potential energy?

• It ascends to a higher altitude.

• More passengers board the plane.

• It moves downward to make a landing.

• The wheels spin as it moves on the ground.

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NGSS.MS-PS3-2

NGSS.MS-PS3-5

Sarah is sitting at the top of the slide in the school's playground. Which of the following changes will increase Sarah's kinetic energy?

• An additional child is added to the top of the slide.

• Sarah is pushed and moves down the slide.

• Sarah climbs down the ladder and off the slide.

• The ladder is moved to the other side of the yard.

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• A

• B

• C

• D

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S8P2

The ​ (a)   of ​ (b)   of​ (c)   says that energy cannot be ​ (d)   or destroyed only transformed from one form to another.

• law

• conservation

• energy

• created

• mass

• volume

• theory

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NGSS.HS-PS3-3

The Law of Conservation of ​ ​ (a)   states that energy ​ (b)   be ​created or ​ (c)  

• Energy

• cannot

• destroyed

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NGSS.MS-PS3-3

NGSS.MS-PS3-5

Which best characterizes the following statement: Energy is never created nor destroyed.Which best characterizes the following statement: Energy is never created nor destroyed.

• It's a scientific law

• it's an hypothesis

• it's a scientific theory

• it's a scientific inquiry

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

The Law of Conservation of Energy states:

• Energy can be created or destroyed and it changes forms.

• Energy cannot be created or destroyed. It only changes forms.

• Energy cannot be created but it can be destroyed.

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

The law of conservation of energy states that energy ​ (a)   be created or destroyed, but that it ​ (b)   change forms or move.

• can not

• can

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NGSS.MS-PS3-5