Earthquake

An earthquake is one of the most devastating natural phenomena.

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Glacier (intermediate)

A glacier is a large body of ice that forms from snow, and is in constant, slow motion.

Weather fronts

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

Cloud formation, types of clouds

Evaporating surface water forms clouds of various shapes from which water falls back to...

The African savannah

The largest contiguous savannah in the world is in Africa. It covers about one-third of the...

Why is seawater salty?

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

Climate zones

The Earth is divided into geographical and climatic zones, which result in the zonation...

Folding (intermediate)

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

Mediterranean climate

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

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