Tsunami waves are very high waves of immense destructive power.

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The work of glaciers

A glacier is a large body of ice in constant, slow motion down a hillside.

Tectonic plates

Tectonic plates can move in relation to each other.

Milky Way

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

El Niño

A periodic climate pattern that occurs across the tropical Pacific Ocean every five years.


It is a sedimentary rock with high calcium carbonate content.

Volcanic activity

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


Waterfalls form where the river flows over a steep precipice in its course.

Layers of the ocean

Physical properties, as well as the flora and fauna of the ocean change with depth.

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