Plate tectonics

Pangaea is a theory where all continents began as

• one big country

• one big continent

A ______ is a section of the lithosphere that slowly moves over the asthenosphere, carrying large slabs of continental and oceanic crust.

• wedge

• plate

• fault

• chunk

What is the name of the single landmass that began to break apart 200 million years ago?

• Panthalassa

• Laurasia

• Gondwanaland

• Pangaea

The movement of fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another is

• Convection current

• Seismic waves

• Conduction current

• Sea-floor spreading

_____________ is a plate boundary where two plates move away from each other.

• Convergent boundary

• Transform boundary

• Divergent boundary

• Destructive boundary

_____________ is when two plates move toward each other.

• Convergent boundary

• Transform boundary

• Divergent boundary

• Constructive boundary

A _____________ is when two plates move past each other in opposite directions.

• Convergent boundary

• Transform boundary

• Divergent boundary

• Constructive boundary

___________ is the theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle

• Seismic waves

• Convection current

• Plate tectonics

• Drift theory

Earth's plates meet at ____________.

• plate tectonics

• plate boundaries

• continental drift

• oceans

What is the motion of Earth's plates like?

• fast and in stages

• slow and in stages

• fast and constant

• slow and constant