The process of breaking rocks into pieces ranging in size from boulders to pebbles, sand grains, and silt, down to microscopic clay particles and dissolved solids is called:
A) erosion
B) weathering
C) decomposition
D) degradation
E) denudation
Answer: B
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A) directly; measuring the heat content of air molecules B) directly; measuring of the speed of air molecules C) indirectly; measuring the effect that temperature has on other materials D) indirectly; measuring the evaporation of fluid inside a thermometer
To calculate sea-level pressure everywhere, we need to correct for:
a. differences in elevation. c. differences in wind speed. b. differences in temperature. d. differences in relative humidity.
Independence for _____ in 1993 made Ethiopia landlocked.
A. Kenya B. Uganda C. Eritrea D. Somalia
________ is formed when carbon dioxide dissolves in rainwater, and this mildly reactive substance aids chemical weathering
A) Carbonic acid B) Hydrochloric acid C) Clay D) Limestone