Unit 5 Plate Tectonics

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 

Which was NOT evidence of Wegener? 

• Seafloor spreading
• fossils
• puzzle piece
• glacier evidence

What are mid-ocean ridges?

• A chain of underwater waterfalls 
• A chain of underwater volcanos
• A chain of underwater mountains
• A chain of underwater rocks

What does the theory of continental drift state?

• The continents were once joined in a super-continent and have moved over time
• Continents are stationary and do not move
• The Earth is broken into lithospheric plates that move due to convection currents
• none of the above

Who is the person credited with developing the theory of continental drift?

• Harry Hess
• Galileo
• Alfred Wegener
• Newton

A collision between two pieces of continental crust at a converging boundary produces a

• mid ocean ridge
• deep ocean trench
• rift valley
• mountain range