Structure of the Earth Key Words

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  • Created by: Jess2015
  • Created on: 03-04-15 17:31
The Crust
Earth's thin outer shell; can be oceanic crust (sima) or continental (sial)
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The Lithosphere
The crust and upper mantle
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The Mantle
Under the crust; 2900km thick; rocks in the upper part are solid, in the lower part they are liquid; convection currents occur here due to heat from the core
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The Asthenosphere
The liquid lower part of the mantle on which the tectonic plates float
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The Core
The centre of the Earth; temperatures can reach above 5000⁰C; the outer core is semi-liquid and mainly iron; the inner core is solid and made of an iron-nickel alloy; the heat of the core creates convection currents in the mantle
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Other cards in this set

Card 2

Front

The crust and upper mantle

Back

The Lithosphere

Card 3

Front

Under the crust; 2900km thick; rocks in the upper part are solid, in the lower part they are liquid; convection currents occur here due to heat from the core

Back

Preview of the back of card 3

Card 4

Front

The liquid lower part of the mantle on which the tectonic plates float

Back

Preview of the back of card 4

Card 5

Front

The centre of the Earth; temperatures can reach above 5000⁰C; the outer core is semi-liquid and mainly iron; the inner core is solid and made of an iron-nickel alloy; the heat of the core creates convection currents in the mantle

Back

Preview of the back of card 5

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