Plate Tectonics & Earthquakes 🌋 Flashcards

1
Q

Conservative plate boundary

A

Where two plates slide past eachother

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2
Q

Collision plate boundary

A

Two continental plates meet

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3
Q

Destructive plate boundary

A

Oceanic crust meets continental crust

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4
Q

Constructive plate boundary

A

Two oceanic plates move apart

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5
Q

What is a plate

A

A piece of the earth’s crust

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6
Q

What is a plate boundary

A

Where two plates meet

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7
Q

Distribution of volcanoes and earthquakes

A

Along the plate boundaries

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8
Q

Epicentre

A

The point on the Earth‘s surface directly above the focus. This is where maximum damage is caused

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9
Q

Seismic waves

A

Spread outwards, their stength decreases with distance from focus

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10
Q

What is the focus

A

The start of the earthquake

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11
Q

What was the Magnitude of the Christchurch earthquake

A

6.3

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12
Q

What was the magnitude of the Nepal earthquake

A

7.8

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13
Q

When was the Nepal earthquake

A

25th April 2015

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14
Q

When was the Christchurch earthquake

A

22nd Feb 2011

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15
Q

Primary effects of Christchurch

A

181 killed
6600 injured
50% of city buildings destroyed
80% of city without electricity
Liquefaction- 4000 homes unstable

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16
Q

Secondary effects of Christchurch

A

Closing of businesses
couldn’t hold the five Rugby World Cup matches
schools closed for two weeks

17
Q

Immediate responses of Christchurch

A

International aid - $6-7 million
Areas zoned to assess damage
‘Farmy army’ helped clean city
300 Australian police officers flown in

18
Q

Primary effects of Nepal earthquake

A

8600 dead
14500 injured
18 climbers killed at Mt Everest
Communication lines cut off
45000+ classrooms damaged/destroyed

19
Q

Secondary effects of Nepal earthquake

A

2.8 million homeless
Tourism sites severely damaged = loss of income
1.1 million children denied access to education
Will take a decade to recover financially

20
Q

Immediate responses Nepal earthquake

A

Aid form UK,US, Pakistan, Germany &India
British public gave £41 million
People dug with bare hands to recover bodies

21
Q

Long term response to Nepal earthquake

A

Asian development bank gave $200 million
Uk gov gave £73 million
Uk provided 30 tonnes of humanitarian aid and equipment
Schools reopened 31st May
Medical teams remain active in educating for future events

22
Q

Problems with Nepals relief effort

A

Lack of urgency
One international airport so getting aid to the country was problematic

23
Q

Why do people live in tectonic areas

A

Volcanic rock and ash = fertile land for farming
tourists attracted to volcanoes = job opportunities & money
geothermal energy = cheaper electricity
minerals contained in lava = mining