The Restless Earth

Question 1

Name the different types of plate margins and what direction the plates move in.

Answer 1

Destructive- Plates move towards each other.
Constructive- Plates move away from each other
Conservative- Plates moving sideways past each other.

Question 2

What plate margins do fold mountains occur on?

Answer 2

Destructive

Question 3

What do people use fold mountains for?

Answer 3

Farming, Hydro-electric power, Tourism, Mining, Forestry

Question 4

Composite volcanoes

Answer 4

• Made up of ash and lava that has been erupted and cooled and hardened into layers.
• Thick lava which flows slowly.

Question 5

Shield volcanoes

Answer 5

• Made up of only lava.

- Runny lava which flows quickly and spreads over a wide area which forms a low flat volcano.

Question 6

Dome volcanoes

Answer 6

• Made up of lava only.

- Thick lava which flows slowly and hardens quickly forming a steep-sided volcano.

Question 7

Ways earthquakes can be measured.

Answer 7

• The richter scale. This is when you measure the magnitude with a seismometer.
• The mercalli scale. This measures the effect of an earthquake. It is measured through eye witnesses observations.

Question 8

What is the epicentre and focus of a earthquake?

Answer 8

The focus is the point in the earth where the earthquake starts. The epicentre is the point on Earth’s surface straight above the focus.

Question 9

What is a tsunami?

Answer 9

A series of huge waves caused when big amounts of water gets displaced. Normally a powerful earthquake will cause this.

Question 10

Case study for a tsunami.

Answer 10

The Indian Ocean in 2004. It was caused by a earthquake which measured 9.1 on the richter scale.