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EQ1: Why are some locations more at risk from tectonic hazards? Categorise
Target Level
C
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Destructive
Constructive
Transform (conservative)
Runny lava means that volcanoes are effusive rather than explosive
Two plates collide
Two plates move apart
Rift valleys on land
Plates move in opposite directions, or at different speeds
Most earthquakes are fairly gentle
The Pacific Ring of Fire, for example
Land is destroyed
The denser oceanic plate is subducted and melts
New land is created
Magma wells up to fill the gap – pillow lava under the ocean
Powerful earthquakes as the crust sticks and pressure builds
Earthquakes, no volcanoes
Fault lines – such as the San Andreas Fault
Explosive volcanoes with sticky lava