1. Weather factors include a. average air temperature.
b. annual precipitation.
c. humidity.
d. two of the above

2. The dew point is the temperature at which

a. dew forms on surfaces.
b. water vapor starts to condense.
c. relative humidity is 100 percent.
d. all of the above
3. Relative humidity may decrease if

a. water vapor condenses out of the air.
b. water evaporates into the air.
c. air temperature decreases.
d. two of the above

4. Which type of cloud forms at high altitudes?
a. cirrocumulus
b. altocumulus
c. stratocumulus
d. nimbostratus

5. Which type of cloud forms when strong air currents carry warm air upward?

a. cirrus
b. stratus
c. cumulus
d. cirrostratus
6. The type of fog that forms

6. The type of fog that forms when cool air moves over a warm lake is called

a. radiation fog.
b. advection fog.
c. steam fog.
d. upslope fog.

7. Rain that passes through a layer of freezing air near the ground become

a. glaze.
b. hail.
c. sleet.
d. snow.