Energy Transformation

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.

Tags

NGSS.MS-PS3-4

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

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 —

• nuclear

• light

• thermal

• mechanical

In energy transformations, "wasted energy" usually takes what form?

• heat
• chemical energy
• light
• sound waves

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NGSS.MS-PS1-4

Which of the following mechanical energy to electrical energy?

• solar calculator
• windmill
• glow stick
• firecracker

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NGSS.MS-PS3-5

At which point is kinetic energy greatest? 

• W
• X
• Y
• Z

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NGSS.MS-PS3-5

NGSS.MS-PS3-4

NGSS.MS-PS3-1

At which point is potential energy greatest?

• W
• X
• Y
• Z

Tags

NGSS.MS-PS3-2

Position A is the starting point for the roller coaster. At which position will the first rollercoaster car have the most kinetic energy?

• C, it’s the mid point, so all of the potential energy has been transferred to kinetic energy and the roller coaster car will be traveling the fastest.

• A, it’s the highest point, so all of the potential energy has been transferred to kinetic energy and the roller coaster car will be traveling the fastest.

• D, it’s the lowest point, so all of the potential energy has been transferred to kinetic energy and the roller coaster car will be traveling the fastest.

• G - it is the point where the ball reaches the top, so all of the potential energy has been transferred to kinetic energy and the roller coaster car will be traveling the fastest.

At which position on the track does the car have almost an equal amount of both potential and kinetic energy

• C - as the ball travels down the hill the potential energy is transferred to kinetic energy; halfway down the hill half of the potential energy has decreased and half of the kinetic energy has increased.

• G - as the ball travels up the hill the potential energy is transferred to kinetic energy

• D - as the ball travels down the hill the potential energy is transferred to kinetic energy; bottom the hill half of the potential energy has decreased and half of the kinetic energy has increased.

• A - as the ball travels down the hill the potential energy is transferred to kinetic energy; up the hill half of the potential energy has decreased and half of the kinetic energy has increased.

When a pendulum swings, at which point is potential energy at its greatest?

• 1
• 2
• 3
• 4