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St Ivo School Geography Department - GCSE REVISION

Define the following key terms... 1. Epicentre - this is the point on the surface directly above
the focus of an earthquake - the most damage often occur
1. Epicentre here
2. Focus 2. Focus - this is the point underground where…

Page 2

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St Ivo School Geography Department - GCSE REVISION Points should include:

Both earthquakes & volcanoes occur in long narrow bands - often
following the edge of continents (e.g. W Coast of S America)
Describe the global distribution of earthquakes and Largest band of volcanoes are found along the Pacific Ring…

Page 3

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St Ivo School Geography Department - GCSE REVISION

- two plates move away from each other due to convection currents
- as the plate move apart, pressure causes the crustal rocks to
fracture and a gap and ridge (mid-oceanic ridge) form
- magma rises to fill the gap, volcanoes form…

Page 4

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St Ivo School Geography Department - GCSE REVISION

1. Precious Minerals
2. Fertile Soils
State 6 reasons why people continue to live in volcanic 3. Perceived Risk seen as worth it
areas. 4. Poverty
5. Geothermal Energy




Fold along here
6. Tourism
also beliefs (e.g. Merapi - believed to be…

Page 5

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St Ivo School Geography Department - GCSE REVISION Could include:

Building waste major problem - 50% of buildings in Port-au-Prince and
nearby towns collapsed - including 500 schools, and buildings such as
Presidents Palace and Port-au-Prince cathedral
Including specific facts and figures give five effects of
problem of massive quantities…

Page 6

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St Ivo School Geography Department - GCSE REVISION Examples Include:

Tiltmeters / GPS technology - on side of volcanoes to detect change
in shape which may indicate magma rise (e.g. Mount St Helens -
Describe and explain four techniques for monitoring 1980)
volcanoes. Gas Sampling - monitor levels of Sulphur…

Page 7

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St Ivo School Geography Department - GCSE REVISION Could include:
Foundations sunk deep into bedrock (avoid clay therefore reduce risk
of liquefaction)
Describe examples of what can be done to help limit Rubber Shock-absorbers between foundations / building to absorb
energy waves
the damage caused by earthquakes to buildings. computer…

Page 8

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St Ivo School Geography Department - GCSE REVISION


1. Oceanic Trench

Name the features found at an oceanic-oceanic 2. Subduction Zone
convergence zone.
3. Volcanic Islands




Fold along here
4. Island arc
Yr 11 - Tectonics www.geobytesgcse.wordpress.com www.geobytesgcse.wordpress.com




St Ivo School Geography Department - GCSE REVISION


1. Oceanic Trench

Name…

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