Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Geography > earthquakes > Flashcards

earthquakes Flashcards

You may prefer our related Brainscape-certified flashcards:
U.S. Geography flashcards World Geography flashcards
1
Q

natural hazard

A

a natural event(earthquake, volcano) that threatens people or has the potential to cause damage, destruction and death

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

natural disaster

A

when a natural hazard interacts with a vunerable population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

convection currents

A

heat from core melts rocks in lower mantle

molten rock rises at the crust, some magma escapes at volcanoes

most magma forced sideways, dragging the plates

magma cools and sinks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

ridge push

A

new crust rises when heated and creates a ridge

it pushes older crust away from the ridge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

slab pull

A

old crust is cooler and thicker than the hot mantle, so it sinks to the mantle pulling the plate downwards

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

oceanic crust and continental crust key differences

A

oceanic:
made of basalt rock
average thickness, 7km
denser 2.9g/cm3
can be subducted
younger

continental:
mainly made of granite rock
average thickness, 30-50km
less dense 2.7g/cm3
not often subducted
older

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

composite volcanoes formed

A

when oceanic plate subducted in the mantle and magma rises up through the crust

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is destructive plate

A

oceanic and continental collide
denser oceanic crust subducts beneath less dense continental crust

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is constructive plate

A

plates move apart allowing new magma to rise and form new land

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is conservative plate

A

plates slide past eachother
they can lock together for years, building energy
eventually, the energy releases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

hazards formed in destructive plates

A

earthquakes
tsunamis
composite volcanoes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

hazards formed in constructive plates

A

earthquakes
tsunami
shield volcanoes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

hazards formed in conservative plates

A

earthquakes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

landforms in destructive plates

A

fold mountains
deep ocean trenches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

landforms at constructive plates

A

mid ocean ridge
underwater volcanoes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

landforms at conservative plates

A

faults

17
Q

destructive plate example

A

nazca > south american

18
Q

constructive plate example

A

north american < > eurasion
nazca < > pacific

19
Q

conservative plate example

A

san andreas fault

20
Q

primary effect

A

effects that happen immediately after or during the shaking of the earthquake

21
Q

secondary effect

A

a long term effect that occurs as a result of the primary effect

22
Q

social impact

A

impact on society

23
Q

economic impact

A

impact on money

24
Q

NGO

A

non governmental organisation
someone who is not tied to polotics or government e.g. oxfam

25
Q

international aid

A

assisstance from another country

26
Q

immediate response

A

solve primary effects such as deaths and injuries

27
Q

long term responses

A

important for secondary responses
responses that go on for months and years after a disaster

28
Q

appropriate technology

A

technology that is suited to the needs, skills, resources, wealth and knowledge of the people who live in a local area for the environment in which they live

29
Q

seismic gap

A

an area on a known earthquake fault where earthquake activity has not happened for a while

30
Q

deaths in nepal

A

9000

31
Q

injuries nepal

A

20 000

32
Q

schools destroyed nepal

A

7000

33
Q

deaths christchurch

A

181

34
Q

schools destroyed christchurch

A

9

35
Q

christchurch economic damage

A

$3.5 billion

36
Q

nepal economic damage

A

$5 billion

37
Q

chemical toilets sent CC

A

27 000

38
Q

examples of immediate responses

A

rescue teams
tents, 500 000
road blocks
emergency aid
evacuation

39
Q

secondary responses examples

A

rebuilt schools - hospitals
field hospitals
seeds provided

Geography (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions