World Physical Map

Physical Features of Earth

FeatureValue
Land surface149,000,000 km² (29.2% of total surface)
Water surface361,000,000 km² (70.8% of total surface)
Equatorial circumferences40,075 km (24,901 mi)
Meridional circumference40,009 km (24,860 mi)
Equatorial diameter12,756.3 km (7,926.4 mi)
Polar diameter12,714 km (7,900 mi)
Polar radius6,356.89 km (3,949.99 mi)
Volume of the Earth1,080,000,000,000 km³
Mass5.98x1024 kg

Continents and Population

Size

Continents and Land MassesArea (km²)Percent
World149,000,000100
Afro-Eurasia84,580,00057
Eurasia54,210,00036
Asia43,810,00029
Americas42,330,00028
Africa30,370,00020
North America24,494,00016
South America17,840,00012
Antarctica13,720,0009.2
Europe10,400,0007
Oceania9,142,0006
Australia-New Guinea8,500,0005.7
Australia mainland7,600,0005.1

Population

Continents and Land MassesPopulation (approx.)PercentDensity (h/km²)
World7,560,000,00010043.29
Afro-Eurasia5,400,000,0008463.84
Eurasia4,510,000,0007083.19
Asia3,800,000,0005986.74
Africa990,000,0001421.03
Americas986,000,0001429.17
Europe770,000,0001170.15
North America515,000,000828.87
South America471,000,0005.827.04
Oceania40,800,0000.553.44
Australia-New Guinea30,000,0000.53.28
Australia mainland23,000,7860.32.47
Antarctica1,0000.002~0.00

Chemical Composition of the Earth's Crust

CompoundFormulaContinental CompositionOceanic Composition
silicaSiO₂60.60%50.10%
aluminaAl₂O₃15.90%15.70%
limeCaO6.41%11.80%
magnesiaMgO4.66%10.30%
iron oxideFeOT6.71%8.30%
sodium oxideNa₂O3.07%2.21%
potassium oxideK₂O1.81%0.11%
titanium dioxideTiO₂0.72%1.10%
phosphorus pentoxideP₂O₅0.13%0.10%
manganese oxideMnO0.10%0.11%

Geologic Layers of Earth

Depth kmComponent LayerDensity g/cm3
0-60Lithosphere
0-35Crust2.2-2.9
35-660Upper mantle3.4-4.4
660-2890Lower mantle3.4-5.6
100-700Asthenosphere
2890-5100Outer core9.9-12.2
5100-6378Inner core12.8-13.1

Earth's Major Plates

Plate nameArea 10⁶ km²
Pacific Plate103.3
African Plate78
North American Plate75.9
Eurasian Plate67.8
Antarctic Plate60.9
Indo-Australian Plate47.2
South American Plate43.6