Natural / Tectonic Hazards

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What is a natural hazard?
It's an natural event that has a huge social impact
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what is a hazard risk?
It's the chance or probability of being affected by a natural event
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Why do people put themselves at risk by living in areas prone to natural events?
The advantages weight up against the disadvantages or the event doesn't happen often or have little choose of where to live
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What are the factors increasing the risk of people being effected by natural hazards?
Urbanisation, Poverty, Farming, Climate change
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Why is Urbanisation a factor increasing the risk of people being effected by natural hazards?
Densely populated urban areas are at great risk from natural events such a earthquakes and tropical storms as some of the world's largest cites are prone to these events
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Why is Climate change a factor increasing the risk of people being effected by natural hazards?
Due to the warming of the world, there is more energy in the atmosphere which leads to intense storms and hurricanes. Also due to rising sea levels, there is a increased risk of flooding
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Why is Farming a factor increasing the risk of people being effected by natural hazards?
Due how fertile floodplains are, people choose to live in low-lying areas at risk of flooding.
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Why is Poverty a factor increasing the risk of people being effected by natural hazards?
In poorer parts of the world, there is a shortage of housing which leads to people building on unstable slopes prone to floods and landslides.
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What is an earthquake?
It's the sudden and violent period of ground shaking
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What causes earthquake?
The sudden movement of rocks within the Earth's crust, which builds up enormous pressure and is released
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Why causes earthquakes that don't occur along plate margins?
Human activities e.g. underground mining or oil extraction
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Where do earthquakes normally occur?
Along plate boundaries
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What are the two types of crusts?
Oceanic and Continental
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What are the two theories about what makes the plates move?
convection (heat) currents, rising and falling within the earth and Gravitational pull
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What is a volcano?
it's a large and conical-shaped land form, formed over a long period of time by a series of eruptions
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What type of plates do volcanoes form at?
Constructive and Destructive
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Where do volcanoes form at?
Hot spots, where the crust is thin and magma is able to break through to the surface
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What are the 3 types of plate margins?
Constructive, Destructive and Conservative
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How does a Constructive plate move?
The two plates moves apart
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How does a Destructive plate move?
The two plates moves towards each other
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How does a Conservative plate move?
The two plates slide along each other
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Other cards in this set

Card 2

Front

what is a hazard risk?

Back

It's the chance or probability of being affected by a natural event

Card 3

Front

Why do people put themselves at risk by living in areas prone to natural events?

Back

Preview of the front of card 3

Card 4

Front

What are the factors increasing the risk of people being effected by natural hazards?

Back

Preview of the front of card 4

Card 5

Front

Why is Urbanisation a factor increasing the risk of people being effected by natural hazards?

Back

Preview of the front of card 5
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