What is the role of pressure in metamorphism?
What will be an ideal response?
Answer: Pressure increases as depth increases inside Earth. Increasing pressure causes many minerals to metamorphose into denser minerals that are more stable at high pressure. Recrystallization at high pressure changes rock texture without changing chemical composition or mineral content. Foliation describes planes of minerals formed in response to stress. Foliation is recognized by preferred orientation of minerals, reshaping of minerals, or alternating bands of different minerals.
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foliation refers to this characteristic of rocks:
a - hollow cores b - numerous joints c - large crystals d - wavy, banded lines e - small crystals
What is a choropleth map?
What will be an ideal response?
List the different ways Earth's magnetic field changes over time
What will be an ideal response?
What happens to a mountain root as erosion removes material from the summit?
A. It stays the same. B. It gets deeper. C. It gets shallower.