Plate Tectonics

What causes the tectonic plates to move?

• The gravitational pull of the moon.

• The convection currents in the Earth's mantle.

• The rotation of the Earth.

• The cooling of the Earth's crust.

What happens when two tectonic plates spread apart?

• New crust forms as magma rises up.

• Earthquakes occur due to friction.

• Volcanoes erupt immediately.

• The plates become more dense.

What is the result of tectonic plates moving towards each other?

• Formation of mountain ranges or subduction zones.

• Creation of oceanic ridges.

• Increased volcanic activity in the area.

• Formation of large lakes.

What are the large slabs of rock that make up Earth's surface called?

• Tectonic plates

• Continental shelves

• Oceanic ridges

• Sedimentary layers

What is the molten rock beneath the Earth's surface called?

• Lava

• Magma

• Basalt

• Granite

Which type of boundary creates sea floor spreading?

• Divergent boundary.

• Convergent boundary.

• Transform boundary.

• Plate boundary.

Where is the sea floor the youngest?

• Near the mid-ocean ridges.

• At the continental shelves.

• In deep ocean trenches.

• Along the coastlines.

What can occur when tectonic plates move suddenly?

• Volcanoes

• Tsunamis

• Earthquakes

• Landslides

What is the layer of the Earth beneath the crust called?

• The mantle.

• The core.

• The lithosphere.

• The asthenosphere.

What is the process called when tectonic plates collide?

• Divergent boundary interaction

• Transform boundary interaction

• Convergent boundary interaction

• Subduction zone interaction