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7th Metamorphic

Metamorphic rock quiz review

QuestionAnswer
What is the main factor that causes contact metamorphism? Heat from being close to magma
What is the main factor that causes regional metamorphism? Pressure from large sections of Earth's crust shifting.
What is a place where regional metamorphism is likely to occur? Inside a mountain or near where large parts of Earth's crust are pushing against each other.
What does foliated mean? The grains have been flattened and lined up parallel to each other.
What does nonfoliated mean? The grains in the rock have random placement and are not flattened.
What does foliation do to the strength of a rock? Foliation causes weak spots in rocks which makes foliated rocks break more easily along the lines of foliation.
What are the two factors that cause metamorphism? Intense heat and pressure
What are the two types of metamorphism? Contact and Regional
Which type of metamorphism happens near a magma intrusion? Contact metamorphism
What causes rock to become foliated? Mainly pressure from shifting rock causes the grains to realign and become foliated.
What effect does pressure have on the crystals in a rock during metamorphism? The grains flatten and realign to go the same way. Foliation occurs.
What effect does heat have on the rock during metamorphism? The rock becomes softer without completely melting.
Created by: TBraunsdorf
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