Unit 2 Test

The total mechanical energy is the same both before and after a ________.

• Potential

• Kinetic

• Direct

• Collision

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of these statements is always correct?

• As an object slows down, its potential energy decreases.

• Potential energy is always equal to kinetic energy.

• Total Mechanical Energy represents kinetic energy and light energy.

• As an object speeds up, its kinetic energy increases.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

As a sled goes down a hill, what happens to the energy?

• kinetic energy increases, potential energy increases, total mechanical energy increases

• kinetic energy decreases, potential energy increases, total mechanical energy remains the same

• kinetic energy increases, potential energy decreases, total mechanical energy remains the same

• kinetic energy decreases, potential energy decreases, total mechanical energy decreases

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A direct force means that:

• objects are touching when exerting force on each other

• objects are not touching when exerting force on each other

• energy has been created while the force was exerted

• energy has been destroyed while the force was exerted

Tags

NGSS.MS-PS2-1

A car is moving 25 miles per hour. Which of the following do we know is true?

• The car does not have potential energy.

• The car has potential energy.

• The car does not have kinetic energy.

• The car has kinetic energy.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which best describes The Conservation of Energy?

• Energy appears of thin air.

• Energy is not real.

• The energy you start with is less than you finish with.

• Energy cannot be created or destroyed.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Total Mechanical Energy:

• is the same as potential energy

• is constantly changing

• remains the same

• is the same as kinetic energy

Energy can be transferred through:

• heat

• light

• sound

• electricity

• All of the above

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NGSS.MS-PS4-1

If you know that an object has a large amount of potential energy, what is most likely true about the object?

• It is big.

• It is high off the ground.

• It is moving fast.

• It is going down a hill.

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NGSS.MS-PS3-2

A spring that is tightly compressed has what kind of energy?

• Electrical energy

• Sound energy

• Potential energy

• Kinetic energy