Ice crystals that sublimate before reaching Earth are called :

Ice crystals that sublimate before reaching Earth are called
 A) graupel.
  B) sleet.
  C) fallstreaks.
  D) freezing rain.
  E) virga.

Question 2

The Bergeron-Wegener process depends upon
 A) ice crystals growing at the expense of water droplets.
  B) the fact that ice has a higher vapor pressure than water.
  C) the temperature being above freezing in the cloud.
  D) all of the above
  E) none of the above

Question 3

Graupel
 A) can reach up to an inch in diameter.
  B) is common in the tropics.
  C) is harder than hail.
  D) requires the presence of both ice crystals and supercooled water drops.
  E) all of the above

Question 4

The collision-coalescence process
 A) is most frequent in clouds composed of ice particles.
  B) is more likely to occur in the tropics than in temperate regions.
  C) relies upon supercooled water drops.
  D) only works in updrafts.
  E) is the cause of most of Earth's precipitation.

Question 5

The global cooling and warming effects of clouds depends upon
 A) cloud thickness.
  B) cloud height.
  C) the size of cloud particles.
  D) all of the above
  E) none of the above

Question 6

Clouds
 A) absorb longwave radiation from the Earth.
  B) emit longwave radiation toward the Earth.
  C) emit longwave radiation toward space.
  D) reflect solar radiation.
  E) all of the above

Question 7

If the global atmosphere warms
 A) its relative humidity will decrease.
  B) evaporation will decrease.
  C) there would be no significant affect on weather or climate.
  D) all of the above
  E) none of the above