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Dynamic Earth

TermDefinition
tectonic plates Big slabs of rock that float on the mantle.
tremor A smaller earthquake.
epicentre A spot that is above the centre of an earthquake.
hypocentre It is the point where a earthquake starts.Also known as the focus.
core The centre of the earth.
crust The outside of the earth.It floats above the mantle.
mantle A area between the crust and the core.
primary waves The fastest wave of a seismic wave.Can travel through solids,liquids and gases.It makes the rock change in volume when traveled through.
secondary waves The second fastest wave of a seismic wave.Can only travel through solids.When traveling through rock,the rock changes shape.
surface waves Seismic waves that travel along the surface.
liquefaction When saturated soil is disturbed in a way,mostly earthquakes which makes the soil sink and water comes out of the ground.
siesmograph A device that measures the magnitude of an earthquake.
richter scale A way of measuring earthquakes by strength.
mercalli scale A way of measuring earthquakes by damage done to buildings.
molten Melted into something.
compression Plates pushed together
tension Plates pulling away
shearing Plates sliding past
primary effects caused by the earthquake
secondary effects a result of the primary effect
stratovolcano a volcano with layers of lava and ash
landforms natural structures from the earth
Created by: romjalecoe
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