Unit 05 Plate tectonics

Scientists believe that convection currents within the____ are responsible for the movement

of the plates that form the Earth's crust.

• Asthenosphere

• Lithosphere

• Inner Core

• Outer Core

Which two continents did Alfred Wegener think looked like they fit together like puzzle

pieces?

• North and South America

• South America and Africa

• Pangea

• Gondwanaland and Laurasia

Which piece of evidence did Alfred Wegener NOT use for his theory of continental drift?

• Fossils

• Continental Fit

• Glacial

• Topographic Maps

Which scientist is credited for first proposing Continental Drift Theory?

• Albert Einstein

• Alfred Wegener

• Abraham Ortelius

• Harry Hess

Alfred Wegener noted that fossils from a particular type of reptile were found on both sides of the Atlantic Ocean. Which of the following would be the best explanation of how this occurred?

• The reptiles swam across the ocean.

• The Atlantic Ocean did not exist in earlier times.

• The reptiles walked across a giant land bridge that has weathered away.

• The reptiles walked across an ice bridge located near the equator.

Scientists discovered trilobite fossils in the U.S. and Africa. Additional research in these areas shows that the rocks in the U.S. and Africa surrounding these fossils are physically and chemically similar.

The discovery of trilobite fossils in the U.S. and Africa provide evidence of_____?

• plate tectonic movement

• volcanic eruptions

• weathering and erosion

• weathering and deposition

Which of these landforms is most likely to be found at a convergent boundary?

• Fault line

• Mid-ocean ridge

• Mountain

• Rift valley

Which of these landforms would most likely be found at a divergent boundary?

• Fault line

• Mid-ocean ridge

• Volcanic island

• Mountain

The diagram below models the movement of two tectonic plates.

What is occurring as a result of the plate collision?

• A mid-ocean ridge is forming.

• Subduction is occurring because oceanic crust is denser than continental crust. This tectonic plate action forms a trench and a volcano.

• A divergent boundary is forming.

• A transform boundary is forming due to two plates sliding past one another.

In an area known as The Ring of Fire, volcanic island chains have formed in the Pacific Ocean. What most likely caused this to happen?

• Convergent plate boundary

• Divergent plate boundary

• Transform plate boundary

• Mantle hot spot