Conversions Between Forms of Energy

A doorbell circuit converts electrical energy into mechanical energy. The mechanical energy is in the form of vibrations that ultimately produce

• chemical energy

• radiant energy

• thermal energy

• sound energy

The Rover shown was sent to Mars to gather data. The Rover is powered mainly by solar panels. It has rechargeable batteries that provide energy when the Sun is not shining.

• nuclear and electrical

• magnetic and mechanical

• radiant and electrical

• acoustic and mechanical

Tags

NGSS.MS-PS3-5

When a battery operated train is turned on, it moves along the track. Which BEST identifies the order of the types of energy used to make the train move?

• chemical, electrical, mechanical

• mechanical, chemical, electrical

• electrical, mechanical, chemical

• electrical, chemical, mechanical

Tags

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NGSS.MS-PS3-5

What is the first law of thermodynamics?

• All motion stops at absolute zero, which cannot be reached.

• Energy is conserved in conversions.

• Conversions can happen between heat and other forms of energy.

• Energy can only flow from hot to cold when work is done.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-3

What is the second law of thermodynamics?

• All motion stops at absolute zero, which cannot be reached.

• Energy is conserved in conversions.

• Conversions can happen between heat and other forms of energy.

• Energy can only flow from hot to cold when work is done.

Tags

NGSS.HS-PS3-4

When a lion eats a zebra and then uses the energy from the zebra to run, the lion’s body converts –

• chemical energy to mechanical energy.

• electrical energy to chemical energy.

• chemical energy to light energy.

• mechanical energy to chemical energy.

Tags

NGSS.MS-PS3-5

Which of the following occurs during an energy transformation?

• Energy is destroyed

• New energy is created

• Energy changes form

• Matter is created from energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A car, powered by gas, goes up a hill from point X to point Y. What energy transformation must occur in the car’s engine to move it up the hill?

• Chemical energy into mechanical energy

• Electrical energy into chemical energy

• Heat energy into chemical energy

• Mechanical energy into nuclear energy

Tags

NGSS.MS-PS3-5

Which of these types of energy conversions occur in a battery-powered flashlight?

• Thermal to mechanical to electric

• Light to electrical to chemical

• Thermal to chemical to mechanical

• Chemical to electrical to light

The main purpose of the fan below is to transform electrical energy into

• Light energy

• Chemical energy

• Mechanical energy

• Thermal energy

Tags

NGSS.MS-PS3-5