Tectonic hazards

Question 1

Why do plates move

Answer 1

Convection currents

Question 2

What are the types of plate margin

Answer 2

Destructive
Constructive
Conservative

Question 3

What happens at destructive boundaries

Answer 3

The more dense oceanic plate subducts the continental plate which gives rise to composite volcanoes and earthquakes

Question 4

What happens at constructive boundaries

Answer 4

The plates are moving away from each other and magma rises from the gaps and cools to form new crust

This creates shield volcanoes and mild earthquakes

Question 5

What happens at conservative boundaries

Answer 5

Where plates are moving sideways
Large earthquakes can occur due to the build up in pressure

Question 6

What kind of scale is the moment magnitude scale

Answer 6

Logarithmic (10x next one)

Question 7

Why might people choose in areas at risk from tectonic hazards

Answer 7

Born there
Farming (rich soils near volcanoes)
Tourism

Question 8

Ways to reduce the effect of tectonic hazards

Answer 8

Monitoring - seismometers (earthquakes) and measuring gas from a volcano

Prediction

Planning - emergency services can be prepared and people can be educated so they know what to do

Protection - earthquake proof buildings and strengthened buildings that don’t collapse under ash