Unit 3.2-3.3 (Plate Tectonics)

What is the process by which new oceanic crust is added?

• Trenches
• Seafloor Spreading
• Earthquakes

What is the difference between the theory of plate tectonics and the theory of continental drift?

• The theory of continental drift is the idea that the plates are moving and the theory of plate tectonics is the idea that the continents are moving
• There is no difference between the two
• The theory of plate tectonics is the idea that the plates are moving and the theory of continental drift is the idea that the continents are moving
• Harry Hess came up with the theory of continental drift while Alfred Wegner came up with the theory of plate tectonics

What two landforms are caused by convergent plate boundaries?

• a ridge and rift valley
• a trench and a mid-ocean ridge
• a rift valley and an ocean trench
• and ocean trench and a mountain range

Use the diagram below to answer the following questions.

• Mid-Ocean Ridge
• Seafloor Spreading
• Ocean Trench
• Mid-Ocean Mountain

Why does oceanic crust sink below the continental crust at location B?

• Oceanic Crust is more dense
• Continental crust is more dense
• Oceanic crust is less dense
• Oceanic crust is older

Looking at the image, what type of Tectonic Plate Boundary is demonstrated?

• Strike Slip Boundary
• Convergent Boundary
• Transform Boundary
• Divergent Boundary

Which two types of lithospheric crust are interacting?

• Continental Crust and Continental Crust
• Oceanic Crust and Continental Crust
• Oceanic Crust and Oceanic Crust

Below is a map of the probable position of some of Earth’s continents at one point in the past. Which of the following features most strongly suggests that these continents were once joined? ( 2 answers)

• They are all of a similar size.
• They all have mountain ranges and valleys.
• They fit together like puzzle pieces.
• Similar fossils are found across continents.
• The continents have moved over time.

Match the plate boundary with the image.

• Convergent
• Divergent
• Transform

Match the plate boundary with the image.

• Convergent
• Divergent
• Transform