5.8A Energy Transformations

Energy transformations occur when...

• energy is created through conduction
• energy changes from one form to another
• two forces slide together that are touching
• a chemical reaction takes place

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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

Which of the following devices transforms electrical energy into mechanical energy?

• An e-reader
• a fan
• a manual pencil sharpener
• ipod

A television works by transforming electrical energy into what other kinds of energy?

• Light, thermal, and sound
• Thermal, chemical, and solar
• Sound, mechanical, and electrical
• Light, chemical, and mechanical

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NGSS.MS-PS4-1

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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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

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What is produced during ALL energy transformations?

• Sound Energy

• Mechanical Energy

• Thermal (Heat) Energy

• Chemical Energy

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NGSS.MS-PS3-3

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The Law of Conservation of Energy states that energy is never _____________ or ____________, only transformed.

• created, destroyed

• created, subtracted

• added, subtracted

• destroyed, subtracted

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NGSS.MS-PS3-5