Earth's surface

Those Earth's surface is the boundary layer between the firm or that Waters on the one and that on the other side.

The earth's surface is divided into , and .

Those Geodesy concerns itself with the description of the form of the earth's surface.

The surface of the earth measures 510 million km². The portion that Land surface about 144.5 millions amount to. km² (28%), the water covers approx.. 365,5 millions. km² (72%).

The country distributes itself on 5 (with that 6 continents) as well as Polar areas and sea islands:

• (without , Nowaja Semlja and Atlantic islands): 9.700.000 km² with approximately 31.460 km coasts
• (without polar islands): 44.142.000 km² with 57.000 km coasts
• (without Madagascar): 29.200.000 km² with 26.000 km coasts
• America (without polar areas): 38.334.000 km² with 64.500 km coasts
• Australia (also ): 7.700.000 km² with 7.500 km coasts
  

(all data are rough numbers.)

One computes the middle height of the dry part of the earth's surface on approximately 700 m (Europe 300 m, Asia 880 m, America 610 m, Africa 660 m, Ozeanien and Australia 300 m). The earth's surface with that achieves their highest point with approximately 8., that forms the deepest freely accessible point of the earth's surface for 844 meters finds.

The water surface distributes itself up

• that with 47%, middle depth about 3.870 m
• that with 24%, middle depth about 3.380 m
• that with 20%, middle depth about 3.600 m
• that Arctic ocean 4%
• that Southern ocean with 5%

Altogether the middle depth of the seas amounts to about 3.500 m.

See also: Geodesy, , , Natural catastrophe