Analyze Energy Forms and Transformations

Which energy transformation occurs when a match is lit?

• chemical to heat energy

• heat to potential energy

• electrical to heat energy

• kinetic to potential

Tags

NGSS.MS-PS1-2

A girl threw a ball. As the ball moves through the air, what type of energy does it have?

• heat energy

• chemical energy

• electrical energy

• mechanical energy

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Energy that flows through an electrical circuit is ____________ energy?

• chemical

• electrical

• heat

• solar

A falling rock has kinetic energy. Where does that kinetic energy go when it hits the ground and stops?

• It is reduced until it disappears

• It is converted into potential energy again

• It is converted into heat and sound

• It is converted into matter

Tags

NGSS.MS-PS3-5

Beginning with the source of energy, explain the energy transformation that takes in this circuit.

• chemical to light to heat

• chemical to electrical to light

• light to electrical to chemical

• light to chemical to electrical

A student wound up a propeller in the toy plane shown. After he wound it up, he let it go.

What energy transformation occurred when he released the propeller?

• Gravitational potential energy transformed into kinetic energy.

• Elastic potential energy transformed into kinetic energy.

• Chemical kinetic energy transformed into spinning kinetic energy.

• Elastic kinetic transformed into spinning kinetic energy.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-2

Does all of the electrical energy produced by this battery transform into light energy?

• Yes; because of the Law of Conservation of Energy.

• No; because the mass of the battery changes.

• Yes; because light bulbs are light producing devices.

• No; because some of it transforms into heat energy.

Tags

NGSS.MS-PS3-4

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 and back to potential.

• it changes from potential to kinetic to zero energy.

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

• It changes from potential to kinetic to elastic.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

Which of these would have the greatest mechanical potential energy?

• A roller coaster at the top of a hill.

• A roller coaster half-way up the hill.

• A roller coaster half-way down the hill.

• A roller coaster at the bottom of the hill.

Tags

NGSS.MS-PS3-2

Which of the following is an example of friction converted into heat energy?

• the sun

• a snickers bar

• a generator

• rubbing your hands together

Tags

NGSS.MS-PS3-5