Earth

These occur in the asthenosphere and are thought to cause the tectonic plates above to move.

• convection currents
• ocean currents
• spreading plate
• density currens

Name this plate boundary where two plates move away from each other in opposite directions. They divide!

• divergent
• convergent
• transform
• allegiant 

The process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle is known as

• convection
• continental drift
• subduction
• conduction

Name this plate boundary. When two plates slide past one another with little up or down movement.

• divergent 
• convergent
• transform
• transformers

What happens when an oceanic plate collides with a continental plate?

• the denser oceanic plate  rides on top of the less dense continental plate
• the less dense oceanic plate slides under the denser continental plate
• the denser oceanic plate slides under the less dense continental plate
• the less dense oceanic plate slides past the denser continental plate

What type of land-form is created where two ocean plates move apart or separate?

• mid-ocean ridge
• divergent boundary
• transform boundary
• folded mountains

The feature labeled C represents some of the deepest spots on the ocean floor. These areas are called ___.

• mid-ocean ridge
• trenches
• deep-sea vent
• abyssal plain

In the image, which type of boundary is shown? Hint: its located in the state of California. 

• divergent
• convergent
• transform fault

Scientists think that convection currents that move the plates flow in Earth's

• Continental crust
• oceanic crust
• Asthenosphere
• Lithosphere

Which feature will most likely form at the location marked by an 2?

• a  desert
• a  volcano
• a rift valley
• a transform fault