Restless Earth

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  • Created by: AmyTurner
  • Created on: 29-03-15 16:44
Atmosphere
The layer of gases which make up the air around us.
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Hydrosphere
The layer of water (seas, rivers, lakes, groundwater and ice) on the Earths crust.
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Biosphere
The very thin layer of living things (animals, plants and humans) living on the earths crust
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Geosphere
The rocks of the Earths crust, and deeper into the Earth towards the core.
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Lithosphere
The uppermost layer of the Earth. It is cool and brittle. It includes the very top of the mantle and, above this, the crust.
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Continental crust
forms the land. This is made mostly of granite, which is a low density igneous rock. On average 30-50km thick.
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Oceanic crust
Under the ocean. Much thinner than the continental crust - usually 6-8km thick. It is also denser and made of an igneous rock called basalt.
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Mantle
The middle layer of the Earth. It lies between the crust and the core, it is about 2900km thick.
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Asthenosphere
Part of the earths mantle. It is a hot, semi-molten layer that lies beneath the tectonic plates. It is between 20 and 70km thick.
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Lowe mantle
Part of the mantle. It is a hot solid layer that lies below the Asthenosphere. It is composed of peridotite.
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Core
The innermost layer of the Earth. It lies below the mantle and is made up of iron and nickel
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Outer core
Part of the core. It is liquid and about 2300km thick. It lies above the inner core
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Inner core
Shaped like a ball. It is hot but a solid.
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Convection currents
These transfer heat from one part of a liquid or gas to another.They occur in the atmosphere and the Earths mantle.
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Plumes
Concentrated zones of heat. Ina plume the mantle is less dense. They bring magma to the surface .
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Magnetosphere
A huge invisible magnetic field which surrounds the earth. It protects the earth from harmful radiation from space and the sun.
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Tectonic plates
The Earths surface is broken into large pieces, like a cracked eggshell. These pieces are called tectonic plates.
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Plate boundary
Where tectonic plates meet. There are three kinds.
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Other cards in this set

Card 2

Front

The layer of water (seas, rivers, lakes, groundwater and ice) on the Earths crust.

Back

Hydrosphere

Card 3

Front

The very thin layer of living things (animals, plants and humans) living on the earths crust

Back

Preview of the back of card 3

Card 4

Front

The rocks of the Earths crust, and deeper into the Earth towards the core.

Back

Preview of the back of card 4

Card 5

Front

The uppermost layer of the Earth. It is cool and brittle. It includes the very top of the mantle and, above this, the crust.

Back

Preview of the back of card 5
View more cards

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