If you traveled to another earthlike planet with an ocean, how ...

[Hungry!]

If you traveled to another earthlike planet with an ocean, how could you determine if tectonic plates and plate tectonic movement existed?
 
  a) Look for mountain ranges, oceanic ridges, oceanic trenches, and volcanoes
  b) From satellite imaging, observe a jigsaw fit of the continental edges
  c) Check seismic readings for earthquake activity
  d) All of the above

Question 2

If you look at beach sand under a magnifying glass, what do you see?
 
  a) Quartz grains
  b) Shell fragments
  c) Coral reef debris
  d) Whatever sand-sized particles are available from the local environment
  e) Mud

[batool]

Answer to Question 1

D

Answer to Question 2

D

[Hungry!]

Excellent

[kthug]

Gracias!