Which is not a source of heat for melting rock?
A. geothermal gradient
B. water under pressure
C. mantle plumes
D. the hotter mantle
Answer: B
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Instructions: Choose one answer from each pair of selections. A good measure of how cool the skin can become is the wet-bulb temperature-the LOWEST | HIGHEST temperature that can be reached by evaporating water into the air
The colonial city plan that the Spaniards followed for conquered Latin American cities included all of the following except
A) built around a main center square. B) reconstruction of streets in a grid pattern. C) a large church built on or near the center square. D) a prominent government building or "National Palace" is built on or near the main center square. E) monuments to honor the religious temples of the previous inhabitants are erected.
When did the ozone layer become thick enough to provide an effective UV screen?
What will be an ideal response?
Basaltic magmas crystallize at higher temperatures than granitic magmas.
Answer the following statement true (T) or false (F)