Altitudinal zonation

In mountainous areas the climate, soil properties, the flora and fauna change depending on elevation.

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Snow line

Above a certain altitude snow does not melt, not even in summer.

Volcanic activity

This animation demonstrates different types of volcanic eruptions

Mediterranean climate

It is characterised by dry, hot summers and mild winters.

Plate tectonics

Plate tectonics is a theory dealing with the movement of plates.

Weather fronts

When masses of cold and warm air meet, weather fronts develop.

The work of glaciers

A glacier is a large body of ice in constant, slow motion down a hillside.


A lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.

Rivers and landforms

Rivers play an important role in shaping the Earth's surface: they cause erosion as well as...

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