A finely crystalline or glassy igneous texture indicates that

A. the rock broke apart as it flowed.
B. the rock cooled slowly.
C. there was a lot of gas in the magma.
D. the rock cooled quickly.
E. the ash and pumice were hot and became compacted.


Answer: D

Environmental & Atmospheric Sciences

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A primary reason why land areas warm up more rapidly than water areas is that:

A) evaporation is usually greater on land. B) heat from Earth's interior warms the land. C) land absorbs more solar energy. D) land is a better emitter of energy. E) on land, all solar energy is absorbed in a shallow layer.

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Where are high-level radioactive wastes currently stored in the United States?

A. Onsite at commercial power plants B. In secured landfills C. In artificial bedrock caverns D. On the sea floor

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The United States imports some minerals of which it has ample supplies and production exceeding current demands.

Answer the following statement true (T) or false (F)

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Deformation under low stress, below yield strength, is often

A) elastic. B) plastic. C) irreversible. D) compressive.

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