What role does temperature play in metamorphism?
What will be an ideal response?
Answer: Temperature increases along the geothermal gradient as rocks are buried deeper in Earth's crust by tectonic processes or by the weight of the rocks above them. Rocks also experience higher temperatures near igneous intrusions. A temperature increase can drive the chemical reactions of metamorphism. These reactions include dehydration and degassing of minerals that contain water or gas molecules in their structure. Minerals are stable within a defined range of temperature and pressure. Outside of this stability range, original minerals break down and form new minerals.
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The water table
A. is the top of the zone of saturation. B. is a hard rock layer within the zone of aeration. C. is a perfectly flat sheet of water below the ground surface. D. is the top of the zone of aeration.
Identify the four prominent national groups included in the United Kingdom; which group recently voted to either remain or separate from the United Kingdom?
What will be an ideal response?
Computer models predict that average global temperatures will increase ________ by 2020
A) 3.6 °F. B) -2°F. C) 4°F. D) 1°F. E) 10°F.
____________________ is a discharge of electricity, a giant spark, which usually occurs in mature thunderstorms.
Fill in the blank with correct word.