chapter 7 RAT

Question 1

A firewalker walking barefoot across hot wooden coals depends on wood’s
A. good conduction.
B. poor conduction.
C. low specific heat capacity.
D. wetness.

Answer 1

B. poor conduction

Question 2

Thermal convection is linked most closely to
A. radiant energy.
B. fluids.
C. insulators.
D. all of these

Answer 2

B. fluids

Question 3

When air is rapidly compressed, its temperature normally
A. increases.
B. decreases.
C. remains unchanged.
D. is unaffected, but not always.

Answer 3

A. increases

Question 4

An object that absorbs energy well also
A. conducts well.
B. convects well.
C. radiates well.
D. none of these

Answer 4

C. radiates well

Question 5

Planet Earth loses heat mainly by
A. conduction.
B. convection.
C. radiation.
D. all of these

Answer 5

C. radiation

Question 6

Compared with terrestrial radiation, the radiation from the Sun has a
A. longer wavelength.
B. lower frequency.
C. both of these
D. none of these

Answer 6

D. none of these

Question 7

Glass is transparent to short-wavelength light and is
A. opaque to light of longer wavelengths.
B. opaque to the same light that is reflected from an interior surface.
C. both of these
D. none of these

Answer 7

A. opaque to light of longer wavelengths

Question 8

When evaporation occurs in a dish of water, the molecules left behind in the water
A. are less energetic.
B. have decreased average speeds.
C. result in lowered temperature.
D. all of these

Answer 8

D. all of these

Question 9

When steam changes phase to water, it
A. absorbs energy.
B. releases energy.
C. neither absorbs nor releases energy.
D. becomes more conducting.

Answer 9

B. releases energy

Question 10

Boiling and freezing can occur at the same time when water is subjected to
A. decreased temperatures.
B. decreased atmospheric pressure.
C. increased temperatures.
D. increased atmospheric pressure.

Answer 10

B. decreased atmospheric pressure