Nitrogen cycle

Atmospherical nitrogen is bound by bacteria and used by living organisms in the form of various compounds.

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Warm front, cold front

Cold and warm fronts are formed where bodies of cold and warm air meet.

Limestone

It is a sedimentary rock with high calcium carbonate content.

The Pompeii before time

There is a little village in Northern Hungary in Central Europe that is a hiding place for a...

Formation of stratovolcanoes

Stratovolcanoes consist of layers of volcanic ash, debris and lava.

Wind at the beach

Sea and land breeze form because of the differing warming of land and sea.

Loess

It is a sedimentary rock made up of loosely structured, rough grains of rock.

The Jovian planets

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

The rock cycle

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

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