Mechanical Wave Interactions-Levings

When you puto on the brakes of a bicycle, friction causes some of the mechanical energy to transfer to thermal energy.

• True

• False

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

According to the law of conservation of energy, enrgy can be created or destroyed.

• True

• False

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

In ever energy transformation, some energy is always "lost" as ____ energy.

• chemical

• thermal

• radiant

• electrical

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NGSS.HS-PS3-4

According to the law of conservation of energy, the total amount of energy in the univerise _____.

• remains constant

• changes constantly

• increases

• decreases

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NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Work ____ energy

• reduces

• transfers

• reflects

• stops

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which equation is correct?

• mechanical energy=Kinetic energy-potential energy

• mechanical energy= Kinetic energy + potential energy

• Mechanical energy= potential energy - kinetic energy

• Mechanical energy= Kinetic energy x potential energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When two surfaces interact, some mechanical energy leaves the system as themal energy due to _____.

• friction

• water

• fusion

• surrounding heat

Tags

NGSS.MS-PS3-5

Which of the following does NOT reduce friction?

• grease

• cotton

• oil

• graphite

A fire warms you by transfering ____ energy.

• friction

• water

• thermal

• graphite

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Refraction occurs when the amplitude of a wave changes as it goes from one medium to another.

• true

• false

Tags

NGSS.MS-PS4-2