4th Period Plate Tectonics

The supercontinent theorized by Alfred Wegener was known as?

• Eurasia

• Pangea

• Gondwana

• Panama

One piece of evidence that supports continental drift and the theory of plate tectonics is?

• Fossil evidence on both South America and Africa

• Similar landforms on two continents separated by ocean basins

• The shapes of the coastlines of two continents fitting together

• All of the above

Which of the following features is likely to form where two continental plates push towards each other?

• Rift Valley

• Volcano

• Mountain Range

• Mid-oceanic ridge

Oceanic crust is denser than continental crust? True or False

• True

• False

A transform boundary is where two tectonic plates . . .

• Move toward each other

• Move away from each other

• Slide past each other

Earthquakes mostly occur on which type of boundary?

• Convergent boundary

• Divergent boundary

• Transform boundary

• Mid-oceanic ridge

During subduction, oceanic plates go under less dense continental plates and are recycled into magma. The oceanic plates go into which layer?

• Lithosphere

• Inner core

• Asthenosphere

• Crust

What landform is created during subduction of oceanic plates at convergent boundaries?

• Rift Valley

• Mountain Range

• Oceanic Ridge

• Volcano

Divergent boundaries can be seen along what formation where new oceanic crust is formed?

• Mid-Atlantic Ridge

• Himalayan Mountains

• San Andreas Fault

• Ring of Fire

As scientists examine rocks on the Atlantic Ocean seafloor, what do they observe as they move further away from the Mid-Atlantic Ridge?

• The crust is thicker

• The rocks are smaller

• The rocks are older

• There is no difference