The size of particles that are usually the first to be set in motion by wind is(are):
a. silt.
b. clay.
c. sand.
d. pebbles.
e. boulders
C
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Salt wedge estuaries form their circulation pattern due to the rapid river outflow mixing with ocean water
a. True b. False
The effect of urbanization on a typical stream hydrograph is to
A) decrease runoff. B) increase lag time between storm peak and peak stream discharge. C) decrease lag time between storm peak and peak stream discharge. D) create a base flow.
Why should one not stare at the Sun during an eclipse?
A) because, whether there is an eclipse or not, the Sun's intense radiation can easily damage our eyes B) because the eclipse event itself creates a lensing effect, which greatly magnifies and intensifies the Sun's rays C) because Sunspots, which are excited by the eclipse event, can easily erupt during the eclipse D) because ultraviolet radiation is intensified during the event E) because coronas and corneas are always a bad mix
After an impact occurs on the Moon, the walls of the crater often are too steep and
A. channels are created. B. slope failure occurs. C. rivers are formed.