Hazards Flashcards

1
Q

What’s a natural hazard?

A

A natural event in which can cause harm to people and the environment

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2
Q

What effects hazard risk?

A

Wealth- poor people might have to live in hazardous places
Education- people might not be aware of the risk
Location- some areas are more at risk than others

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3
Q

What’s the thickest layer of the earth?

A

Mantle

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4
Q

Differences between oceanic and continental crust

A

Continental is less dense than the oceanic,
Continental is thicker than the oceanic,
Both from different rocks

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5
Q

What happens to temperature and density as you move onwards from the core?

A

Becomes cooler and less dense

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6
Q

Direction of plate movements:

A

Conservative- side by side
Destructive- oceanic subducted beneath continental plate
Constructive- move apart

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7
Q

What happens at destructive plate boundaries?

A

Earthquakes due to the friction of the plates and volcanos as the oceanic plate subducts and melts the magma erupts through the surface

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8
Q

Where do the most destructive eruptions occur?

A

Destructive boundaries

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9
Q

What’s the scale for measuring earthquakes?

A

Richter scale

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10
Q

What’s subduction?

A

Dense plate is forced beneath a less dense plate

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