Thermal Energy and Heat

If you could measure the average kinetic energy of all the particles in a baseball, you would know the baseball's _.

• temperature

• mass

• hardness

• volume

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NGSS.MS-PS1-4

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The kinetic energy of a liquid in a glass depends on _.

• type of liquid.

• both the speed and mass of the liquid particles.

• number of liquid particles

• both the mass and type of liquid particles.

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NGSS.MS-PS3-1

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Temperature is usually measured in _.

• grams with a scale.

• grams with a thermometer.

• degrees with a calcrimeter.

• degrees with a thermometer.

A metal spoon is used to stir a pot of hot soup. The spoon is warmed by _.

• radiation

• insulation.

• conduction

• convection.

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NGSS.MS-PS3-3

Why do people wear coats in the winter?

• Coats are insulators and keep TE closer to your body.

• Coats are radiators of energy.

• Coats conduct energy to the atmosphere.

• Coats reflect the cold.

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NGSS.MS-PS3-3

Heat energy always flows to an object _.

• with more kinetic energy.

• that has less mass.

• made up of faster moving particles.

• that is at a lower temperature.

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NGSS.MS-PS3-4

What slows the flow of energy from a warmer object to a cooler object?

• an insulator

• a conductor

• thermal energy

• kinetic energy

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NGSS.MS-PS3-3

You poor hot chili into a cool bowl. Energy will be transferred as heat from the chili to the bowl until the _.

• bowl loses its kinetic energy.

• chili becomes warmer than the bowl.

• chili and the bowl are the same termperature.

• bowl is slightly warmer than the chili.

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NGSS.MS-PS1-4

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Suppose you fill an ice-cube tray with water from the tap and put the tray in the freezer. The water's temerature decreases because _.

• cool air in the freezer flows into the water through heat.

• the water contracts at the lower temperature.

• water evaporates and moves into the air in the freezer.

• energy flows out from the water into the cool air in the freezer through heat

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NGSS.MS-PS1-4

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Which of these is an example of energy transfer by radiation?

• Sand burning the soles of bare feet.

• A handle of a frying pan heating up on an electric stove.

• Hands rubbed together to become warm.

• A surfer feeling warm as sunlight shines on her.

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