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Author Question: What generates the heat necessary for convection in the Earth? A) Volcanic eruptions B) Friction ... (Read 68 times)

Shelles

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on: Jul 16, 2018
What generates the heat necessary for convection in the Earth?
 
  A) Volcanic eruptions
  B) Friction between moving slabs
  C) Chemical reactions between geologic materials and hydrothermal fluids
  D) Decay of radioactive materials

Question 2

Which is denser: a 100-million-year-old oceanic lithosphere near a convergent boundary, a 15-million-year-old oceanic lithosphere near a rift, or the upper part of the asthenosphere?
 
  A) A 15-million-year-old oceanic lithosphere
  B) 100-million-year-old oceanic lithosphere
  C) Upper asthenosphere
  D) They all have the same density.


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owenfalvey

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

Answer: D

Answer to Question 2

Answer: B


Shelles

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Reply #2 on: Jul 16, 2018
TY


owenfalvey

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Reply #3 on: Jul 16, 2018
Happy to Help


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