In which geologic setting is the most widespread occurrence of hydrothermal metamorphism found?

A) Subduction zones between oceanic and continental plates
B) Along the axis of a mid-ocean ridge system
C) Along transform plate boundaries
D) Where mantle plumes interact with the bottom of continental plates


Answer: B

Environmental & Atmospheric Sciences

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Why is water a necessary component of the melting process in subduction zones?

a) The addition of water lowers the friction experienced by rising magma. b) Water is a liquid, and rock needs to encounter a liquid in order to become a liquid. c) The addition of water lowers the melting temperature of rock. d) Water creates a buoyant force that allows the magma to rise. e) Water changes the density of the rock, allowing the rock to melt.

Environmental & Atmospheric Sciences

What will be the new temperature of dry air that started at 25°C and was lifted 1 kilometer?

A. 25°C B. 10°C C. 35°C D. 5°C E. 15°C

Environmental & Atmospheric Sciences

The United States wastes almost none of its energy

Indicate whether the statement is true or false

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A rock that is 20 million years old comes from the ________ Epoch

A) Miocene B) Cretaceous C) Jurassic D) Paleocene

Environmental & Atmospheric Sciences