Eurasian, Pacific, Philippine, Indo-Australian, Antarctic, Juan De Fuca, Caribbean, Nazca, Cocos, North American, South American, Scotia, African, Arabian
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Name the 4 intrusive volcanic features
Dykes, Sills, Laccoliths and Batholiths
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Intrusive Volcanic features are..?
Take place beneath the Earth's surface
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Extrusive Volcanic features..?
Take place on the Earth's surface
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Name the 3 minor types of extrusive features?
Hot springs, geysers and boiling mud pools
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Name the 3 types of lava
Basaltic, Andesitic and Rhyolitic
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Basaltic lava is...
Low in silica content, Low in vicosity & eruption temperature (over 950)
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Andesitic lava is...
Medium in silica content, Medium in viscosity & eruption temperature (750-950)
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Rhyloitic lava is...
High silica content, High viscoity & eruption temperature (less than 750)
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Name the 4 types of volcano
Dome, Caldera, Sheild and Fissure
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Where is the focus of an earthquake?
The place in the lithosphere where the earthquake originates from
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Where is the epicentre?
The point on the Earth's surface directly above the focus
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Name the 3 types of seismic waves
P waves, S waves and Surface waves (Love and Rayleigh)
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What does a seismometer measure?
The amount of energy released by an earthquake - magnitude, duration adn direction of vibrations
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