Plate Tectonics

The outer most layer of earth is called the _____________.

• Mantle

• Outer mantle

• Crust

• Inner core

Most dense form of crust:

• Oceanic

• Continental

Which type of crust is thicker?

• Oceanic

• Continental

Least dense form of crust

• Oceanic

• Continental

If oceanic crust and continental crust collide... which will sink into the earth's mantle?

• Oceanic

• Continental

How many major tectonic plates are there?

• 8

• 14

• 10

• 12

________________ currents drive Earth's plate movement.

• ocean

• atmosphere

• wind

• convection

Earth's plates meet at ____________.

• plate tectonics

• plate boundaries

• continental drift

• oceans

There are three types of plate boundaries. Which choice is NOT a type of plate boundary?

• convergent
• thrust
• divergent
• transform

A plate boundary where two plates move away from each other is called

• Divergent Boundary
• Convergent Boundary
• Transform Boundary
• Subduction