Heat Transfer

How does radiation compare to conduction?

• Radiation is heat transfer through liquid, and conduction is heat

  transfer through air.

• Radiation is heat transfer through materials touching, and conduction

  is heat transfer through air.

• Radiation is heat transfer through air, and conduction is heat transfer

  through liquid.

• Radiation is heat transfer through electromagnetic waves, and conduction is heat transfer

  through materials touching.

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Why does an ice cube melt when dropped into hot liquid?

• The liquid absorbs heat from the ice.

• Heat from the liquid transfers to the ice.

• Heat from the ice transfers to the liquid.

• Cold from the ice transfers into the liquid.

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Which shows an example of convection?

• Jose cooks an egg in a pot of boiling water.

• Clara burns her hand by touching a light bulb.

• Lucy wraps herself in an electric blanket to keep warm.

• Ben holds the end of a metal rod in fire to cook hot dogs.qqq

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NGSS.MS-ESS2-6

Which best describes the flow of heat?

• from a larger object to a smaller object

• from a warmer object to a cooler object

• from a cooler object to a warmer object

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How does heat energy from the Sun reach Earth?

• radiation

• solar wind

• conduction

• convection

Which best describes the process of conduction?

• When two objects touch, the heat is transferred into the air.

• When two objects touch, the heat from the hotter object is

  transferred to the cooler object.

• When two objects touch, the cool air from the cooler object is

  transferred to the hotter object.

Jordan places a hot spoon into a container of ice cream. How does this

help him scoop out the ice cream?

• The coolness from the ice cream is conducted to the spoon making it

  easier to scoop out.

• The coolness from the ice cream is radiated to the spoon making it

  easier to scoop out.

• The warmth of the spoon is conducted to the ice cream making it

  easier to scoop out.

• The warmth of the spoon is radiated to the ice cream making it easier

  to scoop out.

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NGSS.MS-PS1-4

Which best describes the process of convection?

• Convection is the primary way heat travels through rays.

• Convection is the primary way heat travels through metals.

• Convection is the primary way heat travels through appliances.

• Convection is the primary way heat travels through liquids and

  gasses.

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Which is the best example of heat transfer by radiation?

• cooling off in a pool on a hot day

• burning your hand on a hot stove

• getting warm by sitting near a campfire

• melting ice by dropping it into boiling water

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Which best explains how convected heat causes a hot air balloon to stay

in the air?

• The heat is falling and replacing cooler air.

• The heat is produced from the rising of air currents.

• The heat is absorbed through the balloon from the sun.

• The heat is rising and circulating, causing the balloon to stay up in

  the air.

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