What size material comprises the dust in a dust storm that extends thousands of feet above the ground?
A)sand
B)silt and clay
C)gravel
D)sand and gravel
E)sand and clay

Question

Quizplus · Accepted Answer

Dust particles in a dust storm can be carried thousands of feet above the ground by strong winds. Such fine particles are typically composed of silt and clay, which are smaller than sand particles. Gravel is usually too heavy to be carried by the wind, while sand and clay may be present in some dust storms, but not necessarily in large amounts. Therefore, the best choice is B.

What Size Material Comprises the Dust in a Dust Storm