Plate Tectonics Mega Unit Review

What happens at a plate boundary?

• Continents get smaller as a result of subduction.
• Sea floor spreading takes place at all boundaries. 
• an oceanic plate becomes a continental plate
• two tectonic plates interact with each other

What is the first layer of the Earth? (From the outside to the center)

• Outer Core
• Upper mantle
• Crust
• Lower mantle

Which layer do the convection currents occur in? 

• Crust
• Upper Mantle 
• Outer Core
• Lower Mantle

Folded mountains sometimes form at convergent plate boundaries. Why? 

• Because convergent plate boundaries occur above hot spots
• Because rock is stretched apart and breaks
• Because subducted oceanic crust melts and rises
• Because rock is compressed and forced upward

When two oceanic plates move apart in a divergent boundary it forms... 

• Magnetic poles
• Mid-ocean ridges
• Ocean trenches
• subduction zones

When two contiental plates move away from each other in divergent boundaries it creates... 

• Rift Valleys
• Ocean Trenches
• Mid-Ocean Ridges
• Subduction Zones

Alfred Wegener's evidence to support his continental drift hypothesis was...

• shapes of the continents
• rocks and fossils
• glaciers/climate
• all of the above

Single, large landmass (also known as super continent) 

• Pandora
• Pretty Princess
• Patrick
• Pangaea

What kind of plate boundary is shown here?

• divergent

• convergent

• transform

• strike slip

What kind of plate boundary is shown here?

• divergent

• convergent

• transform

• submergent