Tectonics

Question 1

State which type of earthquake wave travels fastest

Answer 1

P Wave

Question 2

Explain 2 strategies used to modify tectonic hazard events.

Answer 2

1. Prediction/Warning Systems alert people to a threat so they have time to evacuate.
2. Diversion of lava flows limits damage to buildings/settlements.
3. Educating people makes them prepared so they take the right actions to evacuate.

Question 3

State one tectonic hazard that can cause coastal flooding.

Answer 3

Tsunami

Question 4

Explain 2 characteristics of volcanic hotspots.

Answer 4

• Intraplate volcanic eruptions because of mantle plume

- Volcanoes are formed and move away because tectonic plates move over the hotspot, which remains stationary.

Question 5

Plate movement can be explained by several processes. What only happens at destructive plate boundaries.

Answer 5

Subduction

Question 6

Suggest one way hazard management strategies may have affected the earthquake impacts in Japan.

Answer 6

Education has prepared people so that they know what to do e.g. evacuate, as a result number of deaths and injuries are lowered.

Question 7

Explain 2 secondary hazards caused by earthquakes

Answer 7

1. Tsunami where earthquakes displace the water column creating a bulge of water
2. Fires because the earthquake ruptured electricity and gas lines.