The Law of Conservation of Energy and Energy Transformations

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light
• Electrical to chemical
• Electrical to light
• Chemical to electrical

Which of the following shows an energy transformation from chemical energy to electrical to light energy?

• A bolt of lightning lights the night sky.
• A candle glows brightly in the dark.
• A fire in a fireplace lights up a room.
• A battery causes a flashlight to shine.

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NGSS.MS-PS3-4

What energy transformations take place when a battery-operated radio is in use?

• Electrical to chemical to light
• Sound to chemical to mechanical
• Chemical to electrical to sound
• Light to electrical to thermal

What does the "Law of Conservation of Energy" state?

• Energy is created and can be lost

• Energy is not created or destroyed. It just changes

• Energy is not created or destroyed. It just stays the same

• There is no law of energy.

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

What does energy transformation mean?

• Energy changes from one form to another

• Energy moves but stays the same throughout a system

• Energy cannot change

• Energy is formed at the beginning of a system

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

People get energy from the food that they eat and transform that energy as they move. Which energy transformations occur as a student rapidly rubs the palms of his hands together?

• mechanical to thermal to electrical
• chemical to mechanical to thermal
• mechanical to chemical to sound
• chemical to sound to electrical

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The diagram shows a complete circuit with a battery and a buzzer making noise. This circuit works by transforming -

• chemical energy to electrical to sound.
• electrical energy to thermal to light.
• sound energy to electrical to chemical.
• mechanical energy to electrical to sound.

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NGSS.MS-PS3-5

Which of the following shows the correct order of the energy transformations that occur when green plants produce their food from the Sun’s energy?

• chemical to thermal
• light to chemical
• thermal to light
• chemical to electrical

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

The picture shows a microwave oven. As a microwave oven is operated, electrical energy is transformed into all of the following types of energy EXCEPT —

• solar
• light
• thermal
• mechanical

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

what type of energy is stored in a battery?

• electrical
• chemical
• thermal
• mechanical