Continental Drift Theory

Multiple Choice

Which of the following refers to large pieces of the lithosphere that float on the asthenosphere?

• asthenosphere

• deep-sea trenches

• 
  the mid-ocean ridge

• 
  tectonic plates

Multiple Choice

The driving forces of tectonic plates are related to convection currents in which layer of the Earth?

• crust

• inner core

• outer core

• mantle

Multiple Choice

Which statement does NOT summarize one of the lines of evidence used by Alfred Wegener to support his theory of continental drift?

• 
  Glacial deposits indicate a different climatic condition.

• 
  Similar geologic formations occur on both sides of the Atlantic Ocean.

• Similar fossils are found on widely separated continents.

• Bands of rock are older the farther their position from a mid-ocean ridge.

Multiple Choice

What happens at convergent plate boundaries where oceanic and continental crust meet?

• no associated volcanism occurs

• continental crust is subducted

• oceanic crust is subducted

• oceanic crust is created

Multiple Choice

Crust is neither destroyed nor formed along which of the following boundaries?

• 
  convergent

• transform

• divergent

Multiple Choice

What do you call the plates moving towards each other?

• Convergent Plate

• Divergent Plate

• Transform Plate

Multiple Choice

What do you call the plates moving farther away from one another, creating new crust?

• Convergent Plate

• Divergent Plate

• Transform Plate