Download Precipitation.

Precipitation.
1. Hygroscopic impurities such as salt in a rain drop tends to make the drop grow more/ Less rapidly.
2. Small drop have larger/smaller terminal velocities than Large drops.
3. Explain why cloud droplets do not fall out of the sky like rain does.
4. Snow flakes are usually larger in relatively Warm/Cold temperatures.
5. 10 inches of snow fall in Denver on a day when the water equivalent ratio is 20 to 1. How much
rain is this equivalent to?
6. In each figure the temperature is plotted on the horizontal axis and the altitude on the vertical
axis. The 0°C temperature is indicated by the vertical line and the bold line shows the actual
temperature profile. Below each identify what form of precipitation is likely falling at the
ground.
-
0°C +
-
0°C +
-
0°C +
-
0°C +
1.Small raindrops fall __________ than larger raindrops, and have a
__________ terminal velocity than large raindrops.
a. faster, lesser
b. faster, greater
c. slower, lesser
d. slower, greater
2.Which cloud would most likely produce a downpour?
a. stratus
b. cumulus
c. cumulus congestus
d. cirrostratus
e. cumulonimbus
3.If rain falls on one side of a street and not on the other side, the rain
most likely fell from a:
a. nimbostratus cloud
b. stratus cloud
c. cumulonimbus cloud
d. altostratus cloud
e. altocumulus cloud
4. Supercooled cloud droplets are:
a. ice crystals surrounded by air warmer than 0 oC (32 oF)
b. liquid droplets that are cooler than the air around them
c. liquid droplets observed at temperatures below 0 oC
(32 oF)
d. water droplets that have had all their latent heat
removed
5.Fall streaks most often form with:
a. nimbostratus clouds
b. cumulonimbus clouds
c. stratus clouds
d. altostratus clouds
e. cirrus clouds
6.Which type of precipitation would most likely form when the surface air
temperature is slightly below freezing and the air temperature
increases as you move upward away from the ground?
a. freezing rain
b. hail
c. rain
d. snow
e. drizzle
7.Precipitation with the greatest size (diameter) is:
a. the snow pellet
b. the snow grain
c. a hailstone
d. sleet
e. a rain drop
8.If a city were to receive 1/2 inch of rain in the morning and then 5 inches
of snow that afternoon, about how much precipitation would the
weather service report for that day?
a. 5 1/2 inches
b. 1/2 inch
c. 1 inch
d. 10 inches
9.On average, the water equivalent of 10 inches of snow is about
__________ inches of water.
a. 0.5
b. 1
c. 2
d. 2.5
e. 5
10.Radar gathers information about precipitation in clouds by measuring
the:
a. energy emitted by the precipitation particles
b. absorption characteristics of falling precipitation
c. amount of energy reflected back to a transmitter
d. amount of sunlight scattered off the precipitation
e. amount of solar energy passing through the cloud
Answer Section
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
C
E
C
C
E
A
C
C
B
C