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earth_nerds's Journal

Name:
Earth Nerds
Location:
Hope Island
Website:
Membership:
Open
Posting Access:
All Members , Moderated
This here is a group for people who love the planet they live in and would like it to survive for many a generation. So, if your into the environment, and any of the sciences that deal with the Earth (i.e. geology, biology, chemistry, physics, ecology, zoology, biochemistry, geophysics, marine biology, oceanography etc.) then this is a place for you. And always remember...The Power is Motha Fucking Yours, Bitches!

Earth Facts (for you nerds out there):
3rd planet from the Sun
Age: 4.57 Billion years
Continents: 7
Oceans: 5
Weight: 5.972 sextillion metric tons
Distance from the Sun: 92,955,800 mi
Equatorial Diameter: 12,756.28 km
Polar Diameter: 12,713.56 km
Mean diameter: 12,742.02 km
Oblateness: 0.00335
Equatorial circumference: 40,075 km
Polar circumference: 40,008 km
Surface area: 510,067,420 km²
- land 148,847,000 km² (29.2 %)
- water 361,220,420 km² (70.8 %)
Volume: 1.0832×1012 km³
Mass: 5.9736×1024 kg
Density: 5,515 kg/m³
Equatorial surface gravity: 9.780 m/s²
(0.99732 g)
Escape velocity: 11.186 km/s
Sidereal rotation period: 0.997258 d (23.934 h)
Rotational velocity(at the equator): 465.11 m/s
Axial tilt:23.439281°
Right ascension of North pole: 0° (0 h 0 min 0 s)
Declination: 90°
Albedo: 0.367
Surface temperature(Kelvin):
min. :185 K
mean. :287 K
max. :331 K
Surface pressure: 100 kPa

Atmospheric constituents:
nitrogen: 77%
oxygen: 21%
argon: 1%
carbon dioxide: 0.038%
water vapor: trace(varies with climate)

Earth's composition (by depth below surface):
0 to 60 km - Lithosphere (locally varies 5-200 km)
0 to 35 km - Crust (locally varies 5-70 km)
35 to 60 km - Uppermost part of mantle
35 to 2890 km - Mantle
100 to 700 km - Asthenosphere
2890 to 5100 km - Outer Core
5100 to 6378 km - Inner Core
Image hosted by Photobucket.com

Area:
total: 510.073 million km2
land: 148.94 million km2
water: 361.132 million km2
note: 70.8 % of the world's surface is covered by water, 29.2 % is exposed land

Elevation extremes (measured relative to sea level):
Lowest point on land: Dead Sea −417 m
Lowest point overall: Mariana Trench in the Pacific Ocean −10,924 m
Highest point: Mount Everest 8,850 m (1999 est.)

Land use
arable land: 10 %
permanent crops: 1 %
permanent pastures: 26 %
forests and woodland: 32 %
urban areas: 1.5 %
other: 30 % (1993 est.)
Irrigated land: 2,481,250 km2 (1993 est.)

Earth's Land Masses in Sq. km.
Asia: 44,250,000
Africa: 30,264,000
North America: 24,398,000
South America: 17,793,000
Antarctica: 13,209,000
Europe: 9,907,000
Oceania/Australia: 8,543,000
Image hosted by Photobucket.com

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