Answer:D
Explanation:At depth in the Earth nearly all magmas contain gas dissolved in the liquid, but the gas forms a separate vapor phase when pressure is decreased as magma rises toward the surface of the Earth. This is similar to carbonated beverages which are bottled at high pressure.
8. At depth in the earth , nearly all magmas contain gas dissolved in liquid. When do the gases form into a separate vapor phase?
A. When volume of gas is reduced as pressure increased.
B. When volume of gas expands as pressure is increased.
C. When pressure is decreased as magma rises toward the surface of the Earth.
D. When pressure is increased as magma rises toward the surface of the Earth.
At depth in the Earth nearly all magmas contain gas dissolved in the liquid , but the gas forms a separate vapor phase when pressure is decreased as magma rises toward the surface of the Earth. This is similar to carbonated beverages which are bottled at high pressure.
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