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Home Q & A Board Science-Related Homework Help Physics Astronomy
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RedManchester23 RedManchester23
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6 years ago
The youngest parts of Earth's crust are
 
  a. the bottom layer found in the walls of the Grand Canyon.
  b. the continents.
  c. the continental margins.
  d. the Appalachian Mountains.
  e. the midocean rifts.

Question 2

Shapley found the distance to the center of the galaxy by studying the distance to open clusters.
 
  Indicate whether the statement is true or false

Question 3

Earth's magnetic field is generated by the dynamo effect in the
 
  a. molten metallic core.
  b. solid central core.
  c. plastic mantle.
  d. the crust.
  e. aurora.
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amiraamira
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6 years ago
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#2
6 years ago
I know this sounds cliche, but I was thinking the same thing for each of these. Thanks for confirming Slight Smile
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#3
6 years ago
I'm sure Wink Face Thanks for your honesty
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