Natural Hazards Flashcards

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1
Q

What is a natural hazard?

A

A natural process which could cause death injury or disruption to humans or destroy property and possessions

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2
Q

What is a natural disaster?

A

A natural hazard that has actually happened

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3
Q

What are the two main types of hazards?

A

Geological hazards and meteorological hazards

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4
Q

What is a geological hazard?

A

Caused by land and tectonic processes such as volcanos and earthquakes

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5
Q

What is a meteorological hazard?

A

Caused by weather and climate examples are tropical storms

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6
Q

What are the three different factors that affect risk from natural hazards?

A

Vulnerability, capacity to cope and nature of natural hazards

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7
Q

How does vulnerability affect hazard risk?

A

More people in an area the greater the probability they will be affected by the natural hazards

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8
Q

How does capacity to cope affect the hazard risk?

A

The better a population can cope with an extreme event the lower the rust of being severely affected (example his can deal with it better )

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9
Q

How does capacity to cope affect the hazard risk?

A

The better a population can cope with an extreme event the lower the rust of being severely affected (example his can deal with it better )

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10
Q

How does nature of natural hazards affect the hazard risk from natural hazards?

A

Type- risk from some hazards are greater than others
Frequency-how often natural hazards occur
Magnitude- more severe natural hazards have the greatest affects

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11
Q

What are some examples is primary affects?

A

People that are injured or are killed
Buildings destroyed
Crops or water supplies that W damaged or contaminated
Electricity , gas or communications that is cut off

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12
Q

What are some examples of secondary affects

A

Other hazards like tsunami
Aid can’t get through
If crops are damaged
Country’s economy can become weakened

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13
Q

What are some examples if immediate responses?

A

Evacuation
Rating the injured
Providing temporary housing
Recovery dead bodies
Sending aid

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14
Q

What are some examples is long term responses?

A

Repair homes and buildings
Improve dealings with natural hazards
Improve buildings
Boost economy recovery

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15
Q

What are the two types of crust?

A

Oceanic and continental

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16
Q

What are the differences between continental and oceanic plates?

A

Continental
Less dense
Thick crust
Oceanic
Very dense
Thin crust

17
Q

What are the 4 types of tectonic plates?

A
  1. Destructive (continental to continental)
  2. Destructive (continental to oceanic)
    (In a destructive plate boundary, the plates nice toward each other)
  3. Constructive (2 posted move away)
  4. Conservative margins (plate margins move past each other)
18
Q

Where do volcanoes occur?

A

Constructive and destructive

19
Q

Where do earthquakes occur?

A

All 3 tectonic plates

20
Q

What’s an example of a HIC earthquake?

A

New Zealand 7.8 magnitude 2016

21
Q

What is a secondary effect example of new zealand?

A

Earthquake triggered 100,000 landslides
Major landslide blocked rocket causing flooding and evacuation of 10 farms

22
Q

Give me an example of a primary effect for New Zealand

A

2 people died
Tens of titans of homes damaged
60 people needed emergency housing

23
Q

Give me an example of an immediate response doe new zealand

A

Tsunami warning
200 people evacuated
Power restored after a few hours
International warships sent with supplies

24
Q

Give me an example of a long term response of new zealand

A

53 million provided by KDC to help with revuilding water shstems
Most of road and rail repaired within 2 years

25
Q

Give me an example of a LIC techtonix hazard

A

Ghorka, Nepal, 2015 7.8 magnitude earthquake

26
Q

Give me an example of a primary effect of Ghorka

A

9000 people died
22,000 injured
800,000 buildings damaged/destroyed

27
Q

Give me an example of a secondary effect of Ghorka

A

Triggered an avalanche that killed 18 people

28
Q

Give me an example of a long term response from Ghorka

A

Road from Nepal to Tibet reopened after 2 years
Many heritage sited reopened in June 2015 to encourage tourists

29
Q

Give me an example of an immediate response from Ghorka

A

Charities like Oxfam provided medicine, food and temporary water supplies
Red cross set up emergency shelters for 130,000 people

30
Q

Give me an example of an immediate response from Ghorka

A

Charities like Oxfam provided medicine, food and temporary water supplies
Red cross set up emergency shelters for 130,000 people

31
Q

Why do people live in areas that are at sugar of tectonic hazards?

A
  • always lived there
  • confident government will support them
    -minerals from volcanic ash so attracts farmers
    -tourist attraction so a lot of jobs
32
Q

What are the 4 management strategies to reduce the effect of tectonic hazards?

A

Monitoring- earthquakes can be monitored by seismometers
Prediction- volcanoes can be predicted, but earthquakes cant be reliably predicted
Protection- use reinforced concrete to absorb concretes energy
Planning- people can be educated or emergency supplies can be stockplied

33
Q

What is global atmospheric circulation?

A

Transfer of heat from the equator to the poles by the movement of air

34
Q

What are the 3 cells that the hemisphere has

A

Polar
Ferrel
Hadley

35
Q

Whats an example of a tropical storm?

A

Typhoon Haiyan

36
Q

Give me 3 examples of primary effects of typhoon haiyan

A

6300 dead
1 million houses damaged
1.9 people homeless

37
Q

Give me 2 examples of typhoon Haiyan secondary

A

1 Flooding=several landslides= blocked road= delayed aid
2 5.6 million workers lost their jobs

38
Q

Give me some immediate response examples of typhoon haiyan

A

-PAGSA gave warnings and 800,000 left
-Fishermen weren’t allowed to go to sea

39
Q

Give me an example of a long term response for typhoon Haiyan

A

UN appealed for $300 million
Charities built new storm resistant homes