In Howards cloud classification system sheetlike clouds were named ____ (layer); a puffy cloud ____ (heap); a wispy cloud ____ (curl of hair); and a rain cloud ____ (violent rain).
a. cirrus; cumulus; stratus; nimbus
b. cirrus; nimbus; stratus; cumulus
c. stratus; cumulus; cirrus; nimbus
d. stratus; nimbus; cirrus; cumulus
e. cumulus; cirrus; stratus; nimbus
Question 2In 1803, Luke Howard, an English naturalist, developed a cloud classification system that employed ____ words to describe clouds as they appear to a ground observer.
a. German
b. Greek
c. Spanish
d. English
e. Latin
Question 3The scattering effect of dry haze produces a ____ color when viewed against a dark background and a ____ tint when viewed against a light-colored background.
a. yellowish; bluish
b. bluish; yellowish
c. reddish; yellowish
d. yellowish; reddish
e. whitish; silvery
Question 4Nuclei with a radius of less than 0.1 m are referred to as ____ nuclei.
a. Aitken
b. condensation
c. hygroscopic
d. giant
e. hydophobic
Question 5On an ordinary day, a volume of air about the size of your index finger contains between ____ and ____ particles.
a. 1; 150
b. 10; 1,500
c. 100; 15,000
d. 1,000; 150,000
e. 10,000; 1,500,000
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