AQA C1.7.1 The Earth's crust
Terms in this set (13)
Scientist who proposed the theory of continental drift
The theory that one large continent has broken into several pieces that are all moving a few mm every year.
Large chunks of the earth's crust that are free to move.
Fossils & rock formations
Part of the evidence for continental drift.
The theory before Wegener that suggested land bridges has existed allowong anomals to move between continents.
Caused by two tectonic plates colliding pushing one over the other.
the thin outer layer of the earth between 5 and 50KM thick.
The layer of gas around the earth.
The centre of the Earth, made of iron and nickel, the thickest layer.
2900km thick nearly solid layer of the earth that has convection currents caused by lots of heat.
Natural processes occuring in the Earth's core producing huge amounts of heat.
Difficult to predict violent events caused by the sudden movement of the earth's tectonic plates releasing energy.
Easier to predict than earthquakes due to warning signals like mini earthquakes and rising of molten rock.
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