Restless Earth

Question 1

Restless Earth

What is liquifaction?

Answer 1

Where shaking in an earthquake causes water in soil layers to be brought to the surface and buildings to subside.

Question 2

Restless Earth

What is a fault line?

Answer 2

Where a section of crust splits or cracks during an earthquake.

Question 3

Restless Earth

What is tephra?

Answer 3

A mixture of ash and pumice (a light rock)

Question 4

Restless Earth

What is a tsunami?

Answer 4

Tsunamis are formed by movement of earth’s crust under ocean. Movement is often due to an earthquake.
As crust jolts it causes water to displace.

Displaced water creates a wave that travels in all directions and causes devastation when reaching land.

Question 5

Restless Earth

How much stronger are supervolcanic eruptions?

Answer 5

10,000

Question 6

Restless Earth

What are the 4 stages to a supervolcanic eruption?

Answer 6

1. Magma basin fills.
2. Bulge on surface.
3. Eruption happens.
4. Caldera formed.

Question 7

Restless Earth

What can ash from a Supervolcano do and cause?

Answer 7

Block out sunlight causing mini ice ages

Question 8

Restless Earth

How is the power of a Supervolcano measured?

Answer 8

Volcanic Explosivity Index (VEI)

Question 9

Restless Earth

What scale does Volcanic Explosivity Index (VEI) follow?

Answer 9

1-8 and is logarithmic