Earthquakes Revision
- Created by: Nicole18jc
- Created on: 01-03-19 18:22
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- Earthquakes
- Key Facts
- happen mostly over Asia and Australia
- least over Antartica
- measured on the richter scale
- damage is measured by the mercalli scale
- occur along plate boundaries
- Key Words
- Epicenter
- the point above the focus on the earth's surface
- Focus
- the point of the earthquake in the crust
- Seismic Waves
- the waves that cause the tremors
- Epicenter
- Living With Earthquakes
- 3 P's
- predict
- can forecast when it will happen; not an exact science- monitor tremors
- prepare
- immediately before - drills - emergency services - grab bags
- protect
- building approapriately - years and months before
- predict
- Predicting
- detection
- sensitive instruments measure the earths movements/ rock stress
- foreshocks
- small tremors in a small space of time occur before a large earthquake
- frequency
- the number of recent earthquakes are plotted to see if an earthquake is likely
- detection
- 3 P's
- Living With Earthquakes 2
- why?
- cheaper
- volcanoes - fetile soil
- tourists
- "drop, cover, hold on"
- grab bags
- reinforced buildings
- why?
- Key Facts
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