Chapters 16 for Section Test 2

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Which body glows with electromagnetic waves? only the Sun only the Earth neither the Sun or the Earth both the Sun and the Earth

both the Sun and the Earth

If air were a better conductor than it is, at nighttime the Earth would be considerably colder. considerably warmer. not appreciably different in temperature.

considerably colder.

If a volume of air is warmed, it expands. If a volume of air expands, it neither warms nor cools. cools. warms.

cools.

Suppose you want to save energy and you're going to leave your warm house for a half hour on a cold day. You should turn the thermostat to room temperature. down. up.

down.

Energy transfer by convection is primarily restricted to gases. fluids. solids. liquids. none of these

fluids.

A good absorber of radiation is a good emitter of radiation. good reflector. poor emitter of radiation. none of these

good emitter of radiation.

The planet Earth loses heat mainly by conduction. radiation. convection. all of these

radiation.

A good heat conductor is a poor insulator. a good insulator. neither a poor nor a good insulator.

a poor insulator.

Suppose you are served coffee at a restaurant before you are ready to drink it. In order for it to be the hottest when you are ready for it, you should add cream right away. when you are ready to drink the coffee. at any time.

right away.

It is commonly thought that a can of beverage will cool faster in the coldest part of a refrigerator. Knowledge of Newton's law of cooling supports or contradicts this common knowledge. shows this common knowledge is false. supports this common knowledge.

supports this common knowledge.


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