The Jovian planets

The four outer planets (Jupiter, Saturn, Neptune and Uranus) do not have solid surfaces, thus they are called gas giants.

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How does soil form?

This lesson presents soil formation, the components of soil, and soil protection.

Weather and climate

Climate is the typical weather of a certain region that changes practically only on a geological...

The atmosphere

The atmosphere surrounds us everywhere on this planet. We take its presence so much for granted...


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

Types of lakes

Still waters take various forms on the planet. Let’s take a look at how we can group them.

Warm front, cold front

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


Tsunami waves are very high waves of immense destructive power.

The moon

What secrets does the Moon have? Who were the first men on the Moon? You’ll find out everything...

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