Because sand grains are heavier than clay and silt particles, sand grains move close to the ground in a leaping pattern called ________.

A. saltation
B. slipping
C. blowouts
D. jumping
E. parabolas


Answer: A

Environmental & Atmospheric Sciences

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Large areas of high tablelands are found in

A) Africa. B) Central Asia. C) Greenland. D) Australia.

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Galileo believed in a Sun-centered view of the universe

Indicate whether the statement is true or false

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Another name for a ________ boundary is a destructive boundary

A) convergent B) divergent C) transform

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From this cross section of the Grand Canyon, the youngest rock or structure of the ones listed below is



A) Late Cenozoic basalts.
B) Mesozoic sedimentary rocks.
C) Precambrian sedimentary and igneous rocks.
D) Precambrian metamorphic rocks and granite.
E) Hurricane fault and faults along the Grand Wash Cliffs.

Environmental & Atmospheric Sciences