Tides/Plate Tectonics & Seafloor Quiz

What is the Earth's crust made up of?

• Limestone

• Basalt

• Sandstone

• Granite

What is the theory proposed by Alfred Wegener in 1912?

• Theory of Relativity

• Theory of Continental Drift

• Theory of Plate Tectonics

• Theory of Evolution

What causes the movement of tectonic plates according to the Theory of Plate Tectonics?

• Convection currents in the mantle

• Solar radiation

• Magnetic field

• Earth's rotation

What happens at convergent boundaries?

• None of the above

• Plates move away from each other

• Magma pushes through the crust

• Plates collide and the least dense is pushed under the other

What is formed at divergent boundaries in the ocean?

• Trenches

• Mountains

• Volcanoes

• Mid-ocean ridges

What is formed at convergent boundaries in the ocean?

• Trenches

• Mountains

• Volcanoes

• Mid-ocean ridges

What provides strong evidence supporting the Theory of Plate Tectonics?

• Challenger Deep

• Mid-Atlantic ridge

• Seismic activity

• Mariana Trench

What is the deepest point in the Mariana Trench?

• 11,034 m

• 10,000 m

• 8,000 m

• 12,000 m

When an island moves away from a hotspot it will

• begin to get larger

• begin to erode

• blow up

What is a spring tide?

• the difference between the high and low tide is the greatest

• the difference between the high and low tide is the lowest