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Author Question: ________ is molten rock that is below the Earth's surface and retains most of its volcanic gases. ... (Read 54 times)

strangeaffliction

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on: Jul 16, 2018
________ is molten rock that is below the Earth's surface and retains most of its volcanic gases.
 
  A) Lava
  B) Pumice
  C) Magma
  D) Volatiles

Question 2

Describe how magnesium can be exchanged for iron in olivine without destroying the internal framework of the mineral.
 
  What will be an ideal response?


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sylvia

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: Magnesium and ferrous iron both have charges of 2+, so they can be switched in the mineral structure without too much trouble because the ions are roughly the same size.


strangeaffliction

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Reply 2 on: Jul 16, 2018
Gracias!

bigsis44

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Reply 3 on: Yesterday
Wow, this really help

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