Unit 1 Theme D Key Words

When two sections of continental crust crash into each other and both are pushed upwards to form a vast mountain range.

• Constructive Margin

• Conservative Margin

• Collision Margin

• Destructive Margin

When plates slide past one another. Crust is neither created, nor destroyed.

• Constructive Margin

• Conservative Margin

• Collision Margin

• Destructive Margin

When plates are pushed apart, so they move away from one another and new crust is created.

• Constructive Margin

• Conservative Margin

• Collision Margin

• Destructive Margin

When two plates come together and one is subducted beneath the other, causing it to sink into the mantle and melt.

• Constructive Margin

• Conservative Margin

• Collision Margin

• Destructive Margin

Repetitive movements set up in the mantle due to heating by the core, which make the crust move.

• Shockwaves

• Tsunamis

• Convection Currents

• Magnetic Fields

The point of origin of an earthquake, beneath the surface of the Earth.

• Fault

• Focus

• Epicentre

• Crust

The first place on the Earth's surface to feel shockwaves from an earthquake.

• Fault

• Focus

• Epicentre

• Crust

Rocks formed as a result of volcanic activity, when magma cools beneath or lava cools on the surface.

• Igneous

• Metamorphic

• Sedimentary

A wide, low volcano that erupts basic runny lava. Occurs at constructive plate margins.

• Composite Volcano

• Supervolcano

• Fumerole

• Shield Volcano

A layer of the Earth that makes up 80% of its mass and behaves like liquid rock.

• Inner Core

• Outer Core

• Mantle

• Crust