Underground waters

Groundwater and aquifers are types of underground waters.

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Upon physical weathering the rock only falls into pieces, whereas during chemical weathering its...

The Earth’s magnetic field

The Earth’s magnetic North and South poles are located near the geographic North and...

How are rocks made?

You can follow the process of the formation of rocks.

Milky Way

The diameter of our galaxy is about 100,000 light years; it contains more than 100...

Abrasion coasts

The destructive force of waves can create steep cliffs in certain coastal areas. Let’s see how...

Snow line

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

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