Thermal Energy

How is thermal energy transferred?

• Through electrical currents
• Through sound waves
• Through the movement of particles
• Through light waves

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How does thermal energy transfer occur?

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If you remove thermal energy from a gas, the particles will ________ down, the gas will condense into a liquid, and then it might even freeze into a solid if you remove enough thermal energy.

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NGSS.MS-PS1-4

What is the process called when a solid changes into a liquid?

• Freezing
• Evaporation
• Melting
• Condensation

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NGSS.MS-PS1-4

How does adding or removing thermal energy affect the motion of particles in a substance?

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What happens to a gas when thermal energy is removed?

• It freezes into a solid
• It sublimates into a solid
• It evaporates into a gas
• It condenses into a liquid

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How does adding thermal energy affect particle motion?

• Particles move in a straight line
• Particles slow down
• Particles stop moving
• Particles move faster

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How do the particles in a solid behave?

• They slide past each other
• They move around freely
• They collide with each other
• They vibrate in place

What is the change of state from solid to liquid called?

• Condensation
• Sublimation
• Evaporation
• Melting

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NGSS.MS-PS1-4

What happens to particle motion when thermal energy is removed?

• Particles stop moving
• Particles move in a straight line
• Particles slow down
• Particles move faster

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