Potential and Kinetic Energy Review

Students are investigating changes from potential to kinetic energy by rolling a marble down a ramp made by propping up a plastic ruler on a book and letting it roll down. Which of the following will change the potential energy the marble starts with?

• Adding more books beneath the ruler to increase its height

• Pushing the marble down the ramp

• Switching the plastic ruler with a wooden one

• Replacing the marble with a rock

Tags

NGSS.MS-PS3-2

The illustration shows a roller coaster and indicates four different positions the car might be at as it moves along the track.

At which point in the roller coaster's journey is its potential energy the greatest?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2

Sammy studied kinetic and potential energy by observing apples on a tree during a field investigation. What type of energy do the apples on the tree have?

• elastic potential energy

• mechanical energy

• gravitational potential energy

• sound energy

Tags

NGSS.MS-PS3-2

If a green golf ball is dropped from a height of 7 feet and a yellow golf ball is dropped from a height of 12 feet, which ball has greater potential energy before it is released?

• yellow

• green

• Both have the same amount of potential energy.

• Neither will have more potential energy than the other.

Tags

NGSS.MS-PS3-2

When a roller coaster reaches the bottom of a steep slope, it has-

• low PE and high KE

• high PE and low KE

• low PE and low KE

• high PE and high KE

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

Conservation of energy means that

• energy can be created but not destroyed

• energy can be destroyed but not created

• energy can be both created and destroyed

• energy can be neither created nor destroyed

Tags

NGSS.MS-PS3-5

Kinetic energy can be described as

• energy in motion

• stored energy

• a chemical reaction

• connected energy

Tags

NGSS.MS-PS3-1

A bicycle and passenger car are both moving at a velocity of 15 miles per hour. Which has more kinetic energy?

• the bicycle because it has less mass

• They are both moving at the same velocity, therefore they have equal kinetic energy.

• It is impossible to know as both are moving at the same velocity

• the car because it has more mass

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which variables affect kinetic energy?

• pressure and volume

• velocity and mass

• weight and height

• temperature and weight

Tags

NGSS.MS-PS3-1

Which of the following changes will increase the kinetic energy of a snowball at the top of a hill?

• melting the snowball with the sun

• moving the snowball to a lower hill

• pushing the snowball as it rolls down the hill, increasing its velocity

• all of the above

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5