7) How are jet contrails thought to influence the surface temperatures of cities near major airports?
a. Decrease the daily temperature range.
b. Definitely make the daily mean temperature warmer.
c. Definitely make the daily mean temperature cooler.
d. They have no measurable influence on surface temperature.
8) Contrails formed by aircrafts most closely mimic which type of cloud?
a. cirrus
b. stratus
c. fair‐weather cumulus
d. cirrocumulus
9) You are flying in an airplane at 36,000 feet above sea level. You see lightning outside your plane window.
The cloud that is close by is:
a. cirrus.
b. cumulus.
c. stratus.
d. cumulonimbus.
e. altocumulus.
10) Where are lenticular clouds most likely to form?
a. over oceans
b. along coastlines
c. to the lee of mountains
d. in desert regions
11) Which association is not correct?
a. fractus — clouds broken into smaller pieces
b. mammatus — rounded, udder‐like bottoms
c. uncinus — hook‐shaped
d. lenticular — associated with rainbows
12) Cirrus uncinus clouds are often precursors of:
a. clear skies.
b. bad weather.
c. calm conditions.
d. lenticular clouds.
13) The ________ cloud may have an "anvil head."
a. cumulonimbus
b. altostratus
c. cirrus
d. nimbostratus
14) Thunder and lightning are associated with the ________ cloud.
a. cumulonimbus
b. altostratus
c. cirrus
d. cirrostratus
e. nimbostratus