Lyn

En lyn er en pludselig elektrostatisk udladning ledsaget af en lyd kendt som torden.

Relaterede ekstramaterialer

Vandcyklusen (elementær)

Vand på jorden er i en kontinuerlig tilstand af forandring. Vandsyklusen indbefatter...

Exogenic forces

The surface of the Earth has been formed into its present state both by external and internal...

The East African Rift

A Kelet-Afrikai Nagy Hasadékvölgy a kőzetlemezek mozgásának következményeként jött létre.

The Tundra: a green-edged icy wasteland

Is the tundra region as cold and deserted as many people think?

The World of the seas

Seas and oceans cover almost three-quarters of the Earth’s surface. 97.5% of the total...

Plate tectonics

Plate tectonics is a theory dealing with the movement of plates.

The formation of the Andes

Az Andok két kőzetlemez – egy óceáni és egy szárazföldi – ütközésénél jött létre.

Minerals

Rocks are a composed of minerals. These minerals can often be found in their pure forms.

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