Sedimentary rock

Water on Earth is in a continuous state of change. The water cycle includes processes...

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

Developed nearly 500 years ago, it is a variant of the Julian calendar. Today it is the most...

The difference between the temperature of the polar and equatorial zones causes...

This video presents the different stages of coal formation.

An earthquake is one of the most devastating natural phenomena.

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

The weather can be forecast with different meteorological instruments.