Tectonic Hazards

Question 1

What’s a natural hazard

Answer 1

A natural process is a process that could cause death, injury or property

Question 2

What are the two types of natural hazard

Answer 2

geological hazards - land and tectonic

-meteorological hazards - Weather and climate

Question 3

What factors affect hazard risk

Answer 3

VULNERABILITY
More people in areas exposed greater probability
Like Bangladesh
-CAPACITY TO COPE
Natural hazards have to affect human activities
HIC are better at coping flooding and could build and evacuate
-NATURE OF NATURAL HAZARDS
Type
Frequency
Magnitude
Eg. 9 magnitude in Japan 2011 - 15,000 people
Eg. 6 .3 magnitude in L’Aquila Italy - 300 people

Question 4

What’s the layers of earth

Answer 4

• Inner core
• Outer core
• Mantle
• Core

Question 5

What’s oceanic crust

Answer 5

It’s thinner about (5-10 km) more dense

Question 6

What’s continental crust

Answer 6

It’s thicker about (30-50 km) less dense

Question 7

What’s destructive margin

Answer 7

two plates move towards eachother

• oceanic and continental
• denser oceanic is force ms down and destroyed
• volcanos and ocean trenches mountain
• eg.West coast of South America

Question 8

What’s constructive margin

Answer 8

where two plates are moving away from eachother

• magma rises through the mantle
• eg.the mid Atlantic ridge

Question 9

What’s conservative margin

Answer 9

Two plates moving sideways past eachother

• Or different speeds
• Along west coast of USA

Question 10

Volcanos

Answer 10

Volcanos are found at destructive and constructive plate margins
Destructive - oceanic moves down
A pool of magma forms
Magma rises through cracks
Called vents
Magma erupts forming a
Volcano
Constructive - magma rises in the gap
HOTSPOTS - Hawaii - parts of the mantle really hot

Question 11

EARTHQUAKES

Answer 11

1) Caused by tension in all three plate margins
2) Eventually jerk past eachother sends out shock waves
3) shock waves spreads out from the focus
4) measured on moment magnitude scale
5) epicentre point on earth’s centre straight above focus

Question 12

WHAT ARE THE TWO CASE STUDIES FOR TECTONIC HAZARDS

Answer 12

L’Aquila Italy - HIC

Kashmir Pakistan - LIC

Question 13

WHY DO PEOPLE LIVE IN AREAS AT RISK

Answer 13

1) Always lived there
2) There employed in the area
3) confident of support
4) Thinks that severe earthquakes won’t happen again
5) soil is fertile great for crops
6) they are tourist attractions

Question 14

WHAT METHODS OF MANAGEMENT REDUCE TECTONIC HAZARDS

Answer 14

1) MONITORING-
3) PREDICTION
4) PROTECTION
5) PLANNING