Earthquake and Volcano (Natural Disasters) Glossary

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Acid lava
thick viscous lava which flows short distances
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Basic lava
thin runny lava which can flow long distances
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Composite volcano
steep sided cone with layers of ash and lava
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Volcano
A cone shaped mountain created by lava and ash being erupted by the earth
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Shield volcano
a gentle sided volcano with a wide base made up of basic lava
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Compressional margin (convergent)
this is where to plates move together
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Core
centre of the earth
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crater
mouth of the volcano
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crust
thin layer of the earths surface
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earthquake
a shaking of the earths crust
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epicentre
the point within the earths crust where the earthquake occurred
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focus
the point on the earths surface directly above the epicentre
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fold mountains
mountains formed by the earths movement
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geosynclines
a depression between two plates
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lava
the name given to a liquid magma when it reaches the surface of the earth
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mantle
the molten rock that surrounds the earths core
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richter scale
measures the strength of an earthquake
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subduction zone
where a plate sinks and slides under another plate
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tectonic plate
huge section of the earths crust
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tensional margin (divergent)
where two plates move apart
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tsunami
huge tidal wave thats caused by submarine earthquakes
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vent
the opening through which the lava flows in a volcano
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Transform boundary
plates move alongside each other
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hotspot
an area in the upper mantle from which heat rises in a plume from deep in the Earth.
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The Mercalli scale
the intensity of an earthquake
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Other cards in this set

Card 2

Front

thin runny lava which can flow long distances

Back

Basic lava

Card 3

Front

steep sided cone with layers of ash and lava

Back

Preview of the back of card 3

Card 4

Front

A cone shaped mountain created by lava and ash being erupted by the earth

Back

Preview of the back of card 4

Card 5

Front

a gentle sided volcano with a wide base made up of basic lava

Back

Preview of the back of card 5
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