Types of soil (soil profiles)

This animation demonstrates different types of soil.

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Volcanic activity

The area surrounding an inactive or extinct volcano is not necessarily calm. Let’s see the...

The Tundra: a green-edged icy wasteland

Is the tundra region as cold and deserted as many people think?

Mountain climate zones

The decisive factor that determines the climate zones of mountains is the altitude above sea level.

Solar eclipse and lunar eclipse

We can observe quite interesting astronomical phenomena when the Earth, the Sun and the Moon align.

The subtropics

The subtropics are located between the tropical and temperate zones, between 23.5° and 40°...

The rock cycle

Due to the effect of both exogenic and endogenic forces, rocks constantly change. This is called...

Folding (basic)

Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.

The Jovian planets

The four outer planets (Jupiter, Saturn, Neptune and Uranus) do not have solid surfaces, thus...

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