Tectonic Hazards Key Terms

Question 1

Conservative Margin

Answer 1

Two plates sliding alongside each other in the same or different directions

Question 2

Constructive Margin

Answer 2

Two plates move away from each other allowing magma to escape and form new land

Question 3

Continental plate

Answer 3

A tetonic plate which carries mainly land mass

Question 4

Destructive Margin (collision)

Answer 4

Two continenetal plates move towards each other and collide pushing upwards and forming fold mountains

Question 5

Destructive Margin (subduction)

Answer 5

Two plates move towards each other, one continental and one oceanic, the oceanic plate subducts (sinks) under the continental as it is heavier. Forms volcanoes, ocean trenches and causes earthquakes.

Question 6

Earthquake

Answer 6

A sudden or violent movement in the earth’s crust that causes a series of shockwaves

Question 7

Epicentre

Answer 7

The point on the surface, directly above the focus, at the centre of the earthquake

Question 8

Focus

Answer 8

The point in the crust where the earthquake was triggered

Question 9

Hazard Risk

Answer 9

The chance or probability of being involved in a natural event.

Question 10

Immediate Responses

Answer 10

Reactions of people as the disaster happens and in the immediate aftermath

Question 11

Long Term Responses

Answer 11

Reactions of people to disasters that occur in the weeks, months and years afterwards

Question 12

Magnitude

Answer 12

The strength of an earthqauke

Question 13

Monitoring

Answer 13

Monitoring potential natural hazards to try to predict where damage might occur

Question 14

Natural Disaster

Answer 14

A natural event that has a serious affect the lives of people

Question 15

Natural Hazard

Answer 15

A natural event that has the potential to cause harm or damage to humans

Question 16

Ocean Trenches

Answer 16

Formed when oceanic plate is forced under continental plate at a destructive margin

Question 17

Oceanic plate

Answer 17

A tectonic plate the carries mainly water

Question 18

Planning

Answer 18

Actions taken in order to allow communities to respond to and recover from natural disasters

Question 19

Tectonic Plates

Answer 19

The division of the earth’s crust into separate sections

Question 20

Prediction

Answer 20

The ability to forecast where and when a natural hazard may occur

Question 21

Primary Effects

Answer 21

The initial impacts of a natural event on people and property caused directly by it

Question 22

Protection

Answer 22

Action taken before a hazard strikes to reduce its impact

Question 23

Secondary Effects

Answer 23

After effects that occur as indirect imapcts of a natural event, sometimes on a longer timescale

Question 24

Tectonic Hazard

Answer 24

A hazard caused by movement in the aerth’s crust, these are Earthquakes, Volcanoes and Tsunamis

Question 25

Volcano

Answer 25

An openeing in the earth’s crust from which lava , ash and gases erupt.