Distribution of Earthquakes & Volcanoes (Cambridge (CIE) IGCSE Geography)
Revision Note
Earthquake & Volcano Distribution
Earthquake distribution
Earthquakes occur at all types of plate boundaries
Most occur along the Pacific 'Ring of Fire' (approximately 90%)
Volcano distribution
Most volcanoes occur at divergent (constructive) and convergent (destructive) plate boundaries
The majority of active volcanoes (approximately 75%) are located around the rim of the Pacific Ocean called the 'Ring of Fire'
Hotspots occur away from plate boundaries and are plumes/columns of magma which escape through the Earth's crust
Examiner Tip
When describing the distribution of hazards from a map ask yourself the following questions:
What is the general pattern?
Does the pattern relate to anything else for example the location of plate boundaries?
Are they close to the equator or further away?
Are they inland or coastal?
Use map features to help with your description - place names, compass rose, latitude and longitude.
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