Plate Tectonics

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

Scientists think that convection currents flow in Earth's

• continents
• mantle
• lithosphere
• inner core.

Compared to rock in Earth's crust, rocks in the mantle are more

• dense
• mineral-rich
• granular
• porous

Which layer of Earth is the thinnest?

• crust
• mantle
• outer core
• inner core

Part of mantle where lithosphere floats

• Crust
• Core
• Asthenosphere
• Atmosphere

One large landmass

• North America
• Pangea
• South America
• PanAmerica

Heat transfers within the Earth 

• Conduction
• Convection Current
• Ocean Current
• Radiation

Addition of new sea floor

• Subduction
• Sea Floor Spreading
• Sea Floor subduction
• Convergent

To make new crust, ____ is pushed up from the mantle. 

• Lava
• Iron
• Magma
• Nickel

Plates sliding past each other in opposite directions

• Convergent
• Divergent
• Subduction 
• Transform