Restless Earth

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  • Created by: niamh123
  • Created on: 30-12-14 12:54
Asthenosphere
partly molten and partly solid rock- the top layer of the mantel
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lithospere
uppermost layer of the earth, it is cool and brittle. it includes the top layer of the mantle and the crust
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collision zone
where two tectonic plates meet
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continental crust
thick part of the earth's crust formed by large masses of land. Made of mostly granite a low density igneus rock, it is 30-50 km thick.900'C
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convection currents
the movement of heat rising and falling in the earth's mantel
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convergence
air accumulated in a
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epicenter
the earth quakes center
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evacuate
move people away from a disaster zone
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fault
crack in the earth's crust
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focus
a point where pressure is released
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friction
force which causes surfaces to stick together more
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hot spot
hot region deep in the earth that causes earth quakes
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lava
magma that has erupted from a volcano
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lava flows
streams of lava
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magma
a thick mixture of molten rock underground
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magmmitude
the measure of an earthquakes waves
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mantle
semi molten rock below the crust. convection currents move crust above.
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oceanic crust
dense crust below the ocean made of basalt. 6-8 km thick.900'C
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pangea
Name of the super continent that existed 200 million years ago
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plate boundries
the area where plates meet
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plumes
part of convection cell which brings magma to the surface
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primary effects
the immediate effect
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secondary effects
subsequent effects, often worse
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seismometer
measures direction, intensity and duration of earthquakes
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stratovolcano
cone shaped volcano with layered structure
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subduction
the oceanic plate is forced under the continental
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tectonic plate
the two sub layers of the earth's crust
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basalt
an igneus rock that makes up the oceanic crust
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Lower mantle
1600-4000'C and solid made of pendotite
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outercore
4000-5000'C liquid made of iron and nickle
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innercore
solid made of iron and nickle
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constructive boundry
two plates move apart, creating new plate as magma rises
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conservative boundry
two plates slide next to each other, going different ways creating earthquakes
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destructive boundry
oceanic and continental crusts move together, volcanoes and tsunamis
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Other cards in this set

Card 2

Front

uppermost layer of the earth, it is cool and brittle. it includes the top layer of the mantle and the crust

Back

lithospere

Card 3

Front

where two tectonic plates meet

Back

Preview of the back of card 3

Card 4

Front

thick part of the earth's crust formed by large masses of land. Made of mostly granite a low density igneus rock, it is 30-50 km thick.900'C

Back

Preview of the back of card 4

Card 5

Front

the movement of heat rising and falling in the earth's mantel

Back

Preview of the back of card 5
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