Explain how the rock cycle relates to the theory of plate tectonics. What will be an ideal response?


Igneous rocks originate wherever melting occurs, primarily at or near divergent and convergent plate
boundaries and at hot spots. Mountain ranges form at convergent plate boundaries and, as elevated
areas, undergo concentrated erosion, thus becoming regions that shed sediment into adjacent low
areas. This sediment tends to ultimately accumulate along continental margins or in shallow seas, and
there becomes sedimentary rock. Volcanoes are concentrated along plate boundaries or at hot spots,
and the heat from these bakes the surrounding rocks, producing metamorphic rocks. In addition,
directed pressure from plate convergence produces foliated metamorphic rocks.

Environmental & Atmospheric Sciences

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What are the main climatic influences for this station (air pressure, air mass sources, degree of continentality, temperature of ocean currents)?

Environmental & Atmospheric Sciences

Outwash is composed of:

a. silt, sand, clay, and boulders b. silt and clay c. silt d. sand and gravel

Environmental & Atmospheric Sciences

The horizon in which leached materials are accumulated is the ________ horizon

A) A B) O C) E D) B E) C

Environmental & Atmospheric Sciences

The earth formed approximately ________ years ago

A) 5,000 B) 11,000,000 C) 4,600,000,000 D) 13,700,000,000 E) 33,200,000,000,000

Environmental & Atmospheric Sciences