Week 1 MCAS Review: Energy, Waves and Communication

Why is a microwave a correct example of an energy transformation?

• does not require energy.

• It destroys energy

• It changes the form of energy.

• it creates its own energy

Tags

NGSS.MS-PS3-5

What energy transformations occur in a television?

• electrical energy to motion and light energy

• electrical energy to sound and motion energy

• electrical energy to light and sound energy

• electrical energy to heat and motion energy

What energy transformation takes place in a light bulb?

• Light energy changes into heat energy.

• Light energy changes into electrical energy.

• Electrical energy changes into light energy.

• Chemical energy changes into heat energy.

Tags

NGSS.MS-PS3-5

_{Which form of energy is mostly produced in this transformation?}

• Electrical
• Kinetic

• Heat

• Sound

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NGSS.MS-PS3-5

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NGSS.MS-PS1-4

Identify the energy transformation

• Kinetic to sound

• stored to electrical

• sound to kinetic

• heat to sound

Which object is an example of a device that converts electrical currents into heat energy?

• a candle

• the sun

• a freezer

• a toaster

Tags

NGSS.MS-PS3-3

What energy conversion takes place in a solar oven?

• Sound energy to light

• Electrical energy to heat

• Light energy to motion

• Light energy to heat

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NGSS.MS-PS3-4

Which energy source has to be burned to release its energy?

• Sunlight

• Gravity

• Coal

• Water

The switches and lights are part of a circuit. When the switch is on, the circuit is _____________________ and the lights shine.

A student riding a bicycle observes that it moves faster on a smooth road than on a rough road. This happens because the smooth road has

• less gravity

• more gravity

• less friction

• more friction

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