Plate Tectonics

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

• Panthalassa
• Laurasia
• Gondwanna
• 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
• Sea-floor spreading
• Conduction current

The process by which molten material adds new oceanic crust to the ocean floor is called ___________.

• Divergent boundary
• Sea-floor spreading
• Convergent boundary
• Renovating 

What is the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary?

• Subduction
• Induction
• Abduction 
• Reduction

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

• Convergent boundary
• Transform boundary
• Divergent boundary
• Insurgent boundary

_____________ is when two plates move toward each other.

• Convergent boundary
• Allegiant boundary
• Transform boundary
• Sliding boundary

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

• emergent boundary
• divergent boundary
• transform boundary
• convergent boundary

What is the correct order (starting from the surface) of Earth’s layers?

• crust, outer core, inner core, mantle

• mantle, outer core, inner core, crust

• crust, mantle, outer core, inner core

• outer core, inner core, crust, mantle

In sea-floor spreading, molten material rises from the mantle and erupts

• along the edges of all the continents.

• along mid-ocean ridges.

• in deep-ocean trenches.

• at the north and south poles.

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.