Chapter 16-Heat Transfer

A good heat conductor is

a poor insulator

The temperature of outer space is

about 2.7 kelvin

Objects that radiate relatively well

absorb radiation relatively well

A bare roof on a warmly heated home on a snowy day indicates

all of these

Energy transfer by convection is primarily restricted to

fluids

A good absorber of radiation is a

good emitter of radiation

Warm air rises because faster-moving molecules tend to move to regions of less

density and less pressure

If you were caught in freezing weather with only a candle for heat, you would be warmer in

an igloo

Steam that issues from a pressure cooker

both of these

The lower the temperature of an object, the

both of these

Which body glows with electromagnetic waves?

both the Sun and the Earth

A red-hot piece of coal will cool quicker in a

cold room

If air were a better conductor than it is, at nighttime Earth would be

considerably colder

If a volume of air is warmed, it expands and tends to

cool

If a pizza radiates more energy than it absorbs, it's temperature

decreases

If a solid object radiates more energy than it absorbs, its

internal energy decreases

Your feet feel warmer on a rug than on a tile floor because a rug

is a better insulator than tile

When an object absorbs as much as it radiates

it remains at about the same temperature

Which of these are good conductors?

none of the above

A good reflector of radiation is a

poor absorber of radiation

A form of heat transfer that doesn't depend on a medium is

radiation

In practice, a good insulator

slows heat flow

Both black and white road surfaces absorb sunlight. At the end of a sunny day the warmer road surface will be

the black surface

A water-filled paper cup held in a flame will not catch fire. This is because

the paper cup cannot become appreciably hotter than the water it contains

Waves emitted by the Sun and terrestrial wave emissions are

the same except for their frequencies and wavelengths

The higher the temperature of an object

the shorter the wavelengths it radiates

A block of wood and a block of copper will feel neither hot nor cold to the touch when they have

your temperature