What causes earthquakes?

What is the epicentre of an earthquake?

• The point where the earthquake started

• The point on the surface above where the earthquake began

• The centre of the earthquake

• The centre of the fault line

What is the focus of an earthquake?

• The town where the earthquake was centred.

• The fault line that was the focus of the earthquake.

• The point within the earth where the earthquake begins.

• The focus of the damage.

What is the specific layer of the mantle where convection currents occur called?

• Lower mantle

• Lithosphere

• Core

• Asthenosphere

What are convection currents?

• Currents that move the water in the ocean.

• Currents that move the magma in the mantle due to heating and rising, cooling and lowering.

• Currents that heat the earth.

• Currents that make the earth rotate around the sun.

What do convection currents result in?

• They move tectonic plates - pull them apart/push them together.

• They warm the planet.

• They cause earthquakes.

• The cause volcanic eruptions to occur.

How many major tectonic plates are there?

• 9

• 7

• 6

• 8

Which two plate boundaries are responsible for most earthquakes?

• Transform boundary

• Spreading zones

• Collision zones

• Subduction zones

What plate boundary has caused the Alpine fault in New Zealand?

• Subduction zone

• Collision zone

• Transform boundary

• Divergent boundary

When plates slide past one another and stress builds up, this results in...

• Fractures in the crust (fault lines)

• Mountain building

• Tsunami

• Mid-ocean ridge

What kind of energy causes the movement during an earthquake?

• Quake energy

• Seismic energy

• Focus energy

• Epicentre energy