The process of physical and chemical weathering

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

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The atmosphere

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A geyser is a spring characterised by intermittent discharge of water and steam.

Karst region (intermediate)

Karst formations include dolines and dripstones.

The phosphorus cycle

The phosphorus cycle describes the movement of phosphorus through the lithosphere,...

Factors of warming

The duration of solar radiation, the angle of the Sun's rays and the surface albedo all have an...

Why is seawater salty?

Water covers about 71% of the Earth’s surface. But why are there two types of water on Earth,...

The Pompeii before time

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

The weather forecast

The weather can be forecast with different meteorological instruments.

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