EARTH STATISTICS AND GEOLOGIC EXTREMES Flashcards
Earth age?
4.54 Ga
Earth shape?
Oblate spheroid
Earth eccentricity?
0.0167
Earth Obliquity?
23.5°(average) 22.1°(minimum) to 24.5°(maximum)
Earth equatorial diameter?
12,756.27 km
Earth polar diameter?
12,713.504 km
Earth mass?
5.9736 x 10^24 kg
Mass of crust?
2.36 x 10^22 kg
Volume of crust by composition of igneous?
64.7%
Volume of crust by composition of sedimentary?
7.9%
Volume of crust by composition of metamorphic?
27.4%
Mass of mantle?
4.043 x 10^24 kg
Mass of core
1.883 x 10^24 kg
Average density of Earth?
5.513 x 10^3 kg/m3
Equatorial surface gravity?
9.780 m/s2
Polar surface gravity?
9.832 m/s2
Area of Earth?
5.10 x 10^14 m2
Land Area of Earth?
1.48 x 10^14 m2
Continental Area (including margins)
2.0 x 10^14 m2
Water area of Earth
3.62 x 10^14 m2
Oceanic area (excluding margins)
3.1 x 10^14 m2
Average land elevation of Earth
875 m
Average ocean depth of Earth
3794 m
Average continental crust thickness
40 km
Average oceanic crust thickness
6 km
Volume of ocean
1370 x 10^6 km3
Annual ocean precipitation
297 x 10^3 km3
Annual ocean evaporation
334 x 10^3 km3
Annual land precipitation
99 x 10^3 km3
Annual land evaporation
62 x 10^3 km3
Annual runoff volume
37 x 10^3 km3
Atmospheric pressure at 0 km
760 mm Hg
Atmospheric pressure at 50 km
7.5 x 10^-1 mm Hg
Atmospheric pressure at 100 km
4.2 x 10^-4 mm Hg