any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of mars and jupitor in the asteroid belt)
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comet
a celestial object consisting of nucleus of ice and dust. When near the sun, a "tail" of gas and dust particles pointing away from the sun (this is due to the effects of solar radiation and the solar wind)
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meteroite
this is what an asteroid is called when it enters the earths atmosphere
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planet
a celestial body moving in an elliptical orbit around a star
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moon
a natural saterlite of any planet
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ophiolites
slices of oceanic crust found on land ( this happens when part of the oceanic crust splinters of during subduction)
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palaeo magnetism (PM)
is ancient magnetism preserved in rocks
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inner core
the centre of the earth, its a solid
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outer core
this is the seconed layer of the earths structure, its a liquid
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upper and lower mantle
this is the third and fourth layers of the earths structure, these are called plastic solids (they are not true solids, the heat keeps them unstable and just about at melting point) these layers move VERY slowly
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asthenosphere
The upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection (this is because this layer is 5% molten)
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Other cards in this set
Card 2
Front
a celestial object consisting of nucleus of ice and dust. When near the sun, a "tail" of gas and dust particles pointing away from the sun (this is due to the effects of solar radiation and the solar wind)
Back
comet
Card 3
Front
this is what an asteroid is called when it enters the earths atmosphere
Back
Card 4
Front
a celestial body moving in an elliptical orbit around a star
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