Which of the following is the smallest grain size category for clastic particles?
a. sand
b. gravel
c. silt
d. regolith
e. clay
E
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True or False: Geologists infer the interior composition at deep levels from calculations of Earth's density
Indicate whether this statement is true or false.
Which of the following is NOT characteristic of polar ice-sheet climates?
a. the lowest mean annual and lowest summer temperatures recorded anywhere on Earth b. bounded equatorward by the isotherm of 10?C (50?F) for the coldest month c. air has generally low absolute humidity d. receive enough insolation from the long summer days to allow considerable melting
Small earthquakes following the main surface wave arrival are called foreshocks.
Answer the following statement true (T) or false (F)
Spent fuel rods are less dangerous than those rods being readied for use in nuclear power plants.
Answer the following statement true (T) or false (F)