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Restless Earth (2) (How do we know the centre of the earth is? (why is it…
Restless Earth (2)
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Epicentre
- Point on earth above focus
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Richter scale
- Scale used to measure magnitude
Logarithmic scale
- Between each scale, each unit is up 10 times more powerful than the one before.
Pyroclastic flow
- deadly clouds of hot ash and gas that sweep along at 200km/h
Lahar
- (volcanic mudslide) occurs when rain or snow mixes with ash
Ash cloud
- Ash fall builds on roofs, causing collapse.
Lava bombs
- keeps people close to each other
Land slides
- too much pressure on a certain area
Acid rain
- sulphuric acid comes out and travels into the clouds, reacts with rain, making it acidic