Weather and climate
Climate is the typical weather of a certain region that changes practically only on a geological scale, whereas weather can change day by day.
Upon physical weathering the rock only falls into pieces, whereas during chemical weathering its...
Plate tectonics is a theory dealing with the movement of plates.
This lesson presents the internal structure of Earth, the geospheres and their general...
Deserts cover nearly one-seventh of the Earth's land surface.
Karst formations include dolines and dripstones.
The oxygen cycle describes the movement of oxygen within its three main reservoirs.
Developed nearly 500 years ago, it is a variant of the Julian calendar. Today it is the most...
We can observe quite interesting astronomical phenomena when the Earth, the Sun and the Moon align.