Quiz: How is Heat Transferred?

Rearrange the steps involved in radiation into the correct order.

• The waves are absorbed by another object or substance.

• An object emits radiation in the form of electromagnetic waves.

• The electromagnetic waves travel through matter or empty space.

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NGSS.MS-PS4-2

NGSS.MS-PS4-1

Select the objects that transfer heat through the process of radiation.

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Which of the following are accurate statements about radiation?

• Sunlight warming your skin – The Sun emits electromagnetic radiation (mostly visible and infrared light). When this radiation hits your skin, energy is absorbed and converted to heat.

• Microwaves heating food – Microwaves are a form of electromagnetic radiation that cause water molecules in food to vibrate, producing heat.

• Hot air rising from a campfire – This is convection, not radiation. Warm air moves and transfers heat through fluid motion.

• Using a TV remote – Remote controls use infrared radiation, another type of electromagnetic radiation, to send signals to the television.

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NGSS.MS-PS4-2

NGSS.MS-PS4-1

Which of the following statements are not true about radiation?

• Radiation is the movement of energy through electromagnetic waves.

• Radiation is the only form of heat transfer that does not require matter to occur.

• Radiation occurs when electromagnetic waves transfer heat from one substance to another. One substance emits the electromagnetic waves, and the other substance absorbs the waves as heat energy.

• Radiation involves heat traveling through direct contact of objects.

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NGSS.MS-PS4-2

NGSS.MS-PS4-1

What is conduction?

• the flow of energy through a liquid or gas caused by hot particles rising and cool particles sinking

• the transfer of heat between objects that are not in direct contact

• the movement of energy through electromagnetic waves

• the transfer of heat between objects with different temperatures that are touching

What is convection?

• the flow of energy through electromagnetic waves

• the flow of energy through a liquid or gas caused by hot particles rising and cool particles sinking

• the flow of energy through a solid caused by hot particles rising and cool particles sinking

• the flow of energy in a gas caused by direct contact with a solid

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NGSS.MS-PS1-4

What is radiation?

• the movement of energy through ocean waves

• the movement of energy through electromagnetic waves

• the movement of energy through radio waves from cooler objects to warmer objects

• the movement of energy through sound waves

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NGSS.MS-PS4-2

What is a convection current?

• the circular motion of liquids or gases that occurs during convection

• the circular motion that occurs when two gases of the same temperature make direct contact

• the circular motion of solids that occurs during conduction

• the circular motion of solids that occurs during convection

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NGSS.MS-ESS2-6

Which of the following statements are true about thermal energy?

• Heat travels from warmer areas to cooler areas. There are three forms of heat transfer: conduction, convection, and radiation.

• Conduction is the transfer of heat between objects that are touching.

• Convection is the flow of energy through a liquid or gas caused by hot particles rising and cool particles sinking.

• Radiation is the movement of energy through electromagnetic waves.

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NGSS.MS-PS3-4

NGSS.MS-PS3-3

How is radiation different from convection and conduction?

• Radiation requires a medium for energy transfer.
• Convection and conduction are forms of radiation.
• Radiation is the only method of heat transfer that occurs in liquids.
• Radiation does not require a medium for energy transfer.