I need help for my test tomorrow?

Question

hi people

this is not my homework

my teacher gave me this study guy to study for my test tomorrow

but i dont know some of the questions

may you please help me

thanks

1.what is some of the evidence used to prove the theory of sea floor spreading?

2.according to the theory of plate tectonics,south america and africa are far apart because............?

3.how do deep ocean trenches form?

4.which mountain forms at a divergent plate boundary along ocean ridge?

thanks for all the one that help me.........

Answer 1

Check it out:

1. http://en.wikipedia.org/wiki/Seafloor_sp...

2. http://en.wikipedia.org/wiki/Plate_tecto...

3. http://en.wikipedia.org/wiki/Oceanic_tre...

4. http://en.wikipedia.org/wiki/Divergent_b...