Conservation of Energy WUSO

Which of the following is an example of energy conservation in real life?

• A car accelerating on a highway

• A pendulum swinging back and forth without stopping

• A light bulb converting electrical energy into light and heat

• A battery being charged

Tags

NGSS.MS-PS3-5

In a closed system, the total energy remains constant. Which of the following best describes this principle?

• Energy can be created and destroyed

• Energy can be transferred and transformed but not created or destroyed

• Energy is always lost as heat

• Energy is only conserved in mechanical systems

Tags

NGSS.MS-PS3-5

Which of the following scenarios demonstrates the conservation of energy?

• A ball thrown into the air comes back down with less speed

• A car engine converting fuel into motion and heat

• A solar panel converting sunlight into electricity

• A wind turbine generating electricity from wind

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

A student claims that energy is lost when a ball rolls down a hill and stops. How would you explain this using the law of conservation of energy?

• Energy is lost as the ball rolls

• Energy is transformed into sound and heat due to friction

• Energy disappears when the ball stops

• Energy is only conserved in ideal conditions

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following best illustrates the concept of energy transformation?

• A book sitting on a shelf

• A person running and sweating

• A car parked in a garage

• A frozen lake in winter

Tags

NGSS.MS-PS3-5