1. Explain the theory of plate tectonics.

2. Explain how convection currents make the tectonic plates move.

3. What is subduction?
a. Then…. Think about it… How do you think gravity plays a role in subduction?

What are charcteristics of lithosphere?

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

What is a dendrite and what does it do?