Geological Features and Boundaries

What happens to the crust at an ocean trench?

• Crust created

• Crust recycled

• Crust not created or recycled

• Crust destroyed

Which feature is associated with a divergent boundary and continental-continental crust?

• Mid-ocean ridge

• Rift valley

• Ocean trench

• Hot spot

Which of the following is NOT a cause of plate movement?

• Mantle Convection

• Ridge Push

• Slab Pull

• Ocean Currents

If an earthquake occurred in the North Pacific Ocean, what natural phenomenon may occur?

• A) A tsunami

• B) A hurricane

• C) A tornado

• D) A flood

State the relationship between volcanic eruptions, earthquake epicenters, and tectonic plate boundaries.

• Volcanic eruptions and earthquake epicenters are randomly distributed across the Earth.

• Most volcanic eruptions and earthquake epicenters occur at tectonic plate boundaries.

• There is no relationship between volcanic eruptions, earthquake epicenters, and tectonic plate boundaries.

• Volcanic eruptions only occur at divergent boundaries.

Using the picture below of a hot spot and island formation, answer questions A through E.

What pattern is observed in magnetic stripe reversals as evidence for seafloor spreading?

• Normal and reversed polarity symmetrical from mid-ocean ridge

• Fossils found on separate continents

• Rock types similar on different continents

• Coal found in cold areas.

Fill in the blank: The ________ thickness is more near continents, allowing more time for sediment deposition.

• Seafloor

• Crust

• Rock

• Fossil

What does the seafloor age evidence suggest about the age of the ocean floor?

• Older near the ridge

• Younger near the ridge

• Same age throughout

• No pattern.

Which theory is associated with the concept of Pangaea?

• Plate Tectonic Theory

• Continental Drift Theory

• Seafloor Spreading

• Radiometric Dating