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Author Question: Of the normal elements around us, the Big Bang produced: A) none, only energy. B) only hydrogen. ... (Read 20 times)

laurencescou

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on: Jul 27, 2018
Of the normal elements around us, the Big Bang produced:
 
  A) none, only energy.
  B) only hydrogen.
  C) hydrogen and helium.
  D) all elements up to iron.
  E) all elements in much their present proportions.

Question 2

Our sister planet does not show plate tectonics on its surface to the degree our Earth does. What are possible explanations?
 
  What will be an ideal response?


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strudel15

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Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

Perhaps the high temperature of the Venusian surface prevents the formation of rigid plates like on Earth. Maybe our hydrosphere is a critical lubricant for plate motions. Maybe the crust is thinner, so it is easier for lava to erupt as volcanoes like the coronae and prevent the convective cycle that causes plate movement.


laurencescou

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Reply 2 on: Jul 27, 2018
Gracias!

xiazhe

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Reply 3 on: Yesterday
:D TYSM

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