Layers and Tectonics

What is a thin layer of rock that surrounds Earth?

• Crust

• Mantle

• Core

What is Earth's hottest layer?

• Inner core

• Outer core

• Mantle

What are the three types of boundaries?

• Convergent

• Divergent

• Transform Boundaries

What is a tremor of the earth's surface usually triggered by the movement of plates?

• Earthquake

• Volcano

• Tsunami

What is the Earth's thickest layer?

• Mantle

• Crust

• Core

The force from this causes the tectonic plates to move.

• convection currents.

• gravity.

• magnetic fields.

• ocean currents.

The name for magma once it reaches the surface of the Earth.

• lava

• rock

• ash

• steam

This layer of the Earth contains the asthenosphere.

• mantle

• crust

• core

• lithosphere

What is the temperature of Earth's mantle?

• 3,000 degrees.

• 1,000 degrees.

• 5,000 degrees.

• 7,000 degrees.

What type of boundary is it when new crust forms?

• Divergent Boundary

• Convergent Boundary

• Transform Boundary