Energy Unit Review

What can you infer about the energy change that occurred?

• chemical energy from the sun increased the thermal energy of the water

• radiant energy from the sun decreased the thermal energy of the water

• thermal energy from the sun decreased the chemical energy in the water bonds

• radiant energy from the sun increased the thermal energy of the water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Does the car have more potential mechanical energy at point B or D?

• D, because the height is greater.

• D, because it will be going faster.

• B, because it will be going faster.

• B, because the height is less.

Tags

NGSS.MS-PS3-2

A motor is spinning in the diagram below.

How does it get the energy to spin?

• Stored electric energy transforms to chemical energy then into kinetic energy.

• Stored chemical energy transforms into electric energy then into kinetic energy.

• Stored heat energy transforms into electric energy then into kinetic energy.

• Stored electric energy transforms into heat energy then into kinetic energy.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A student wants to model how energy is conserved. She holds a book above the floor and explains that the book now has potential energy. She then drops the book.

What energy transformation occurs after she drops the book?

• It changes from potential to kinetic to elastic.

• It changes from potential to kinetic to sound and thermal.

• It changes from potential to kinetic to zero energy.

• It changes from potential to kinetic and back to potential.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The two pieces of fruit shown on the balance pan shown below were both lifted to a height of 6 feet. At the height of 6 feet, which piece of fruit would contain the greater amount of gravitational potential energy?

• The orange would contain greater gravitational potential energy because it would require more kinetic energy to lift it.

• The apple would contain greater gravitational potential energy because it would require less force to lift it.

• The apple would contain greater gravitational potential energy because more kinetic energy was used to lift it.

• The orange would contain greater gravitational potential energy because its mass is greater than the apple.

Tags

NGSS.MS-PS2-4

A man at a carnival lifts a hammer high over his head before swinging it down onto a pad

• Chemical Energy

• Electric Energy

• Elastic Energy

• Gravitational Potential Energy

Tags

NGSS.MS-PS2-4

According to the law of conservation of energy, energy is not created or destroyed. It changes form or is transformed. What energy transformation(s) is/are depicted here?

• chemical energy ⇒ electrical energy ⇒ heat and light energy

• electrical energy ⇒ light energy

• potential energy ⇒ kinetic energy ⇒ light energy

• chemical energy ⇒ electrical energy ⇒ light energy

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-4

A positively charged particle is slowly moved away from a strong, negatively charged plate

• Chemical Energy

• Electric Energy

• Elastic Energy

• Gravitational Potential Energy

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

A battery sits in an iPod before the iPod is turned on

• Chemical Energy

• Electric Energy

• Elastic Energy

• Gravitational Potential Energy

What form of energy does a compressed spring have?

• kinetic

• chemical

• heat

• potential