Earth Statistics Flashcards by Sean Almazan

Q

Age of Earth

A

4.56 Ga

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Q

Shape of Earth

A

Oblate Spheroid

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Q

Earth Eccentricity

A

0.0167

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Q

Average Earth Obliquity

A

23.5 degrees

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Q

Minimum Earth Obliquity

A

22.1 degrees

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Q

Maximum Earth Obliquity

A

24.5 degrees

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Q

The angle between the planes of Earth’s equator
and orbit.

A

Obliquity

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Q

The variation of an ellipse from a circle.

A

Eccentricity

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Q

Equatorial Diameter

A

12,756.27 km

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Q

Polar Diameter

A

12,713.504 km

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Q

Earth Mass

A

5.9736 x 10^24 kg

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Q

Mass of Crust

A

2.36 x 10^22 kg

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Q

Volume of crust by Composition:
Igneous

A

64.7%

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Q

Volume of crust by Composition:
Sedimentary

A

7.9%

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Q

Volume of crust by Composition:
Metamorphic

A

27.4%

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Q

Mass of Mantle

A

4.043 x 1-^24 kg

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Q

Mass of Core

A

1.883 x 10^24 kg

Q

Average density of Earth

A

5.513 x 10^3 kg/m^3

Q

Equatorial Surface gravity

A

9.780.26711 m/s^2

Q

Polar Surface gravity

A

9.832186368 m/s^2

Q

Area of Earth

A

5.10 x 10^14 m^2

Q

Earth Land area

A

1.48 x 10^14 m^2

Q

Earth Continental area( including margins)

A

2.0 x 10^14 m^2

Q

Earth Water area

A

3.62 x 10^14 m^2

Earth water area(excluding margins)

3.1 x 10^14 m^2

Average land elevation

875 m

Average ocean depth

3794 m

Average continental crust thickness

40 km

Average oceanic crust thickness

6 km

Volume of ocean

1370 x 10^6 km^3

Annual ocean precipitation

297 x 10^3 km^3

Annual ocean evaporation

334 x 10^3 km^3

Annual land precipitation

99 x 10^3 km^3

Annual runoff volume

37 x 10^3 km^3

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

Atmospheric pressure: at 160 km

2.0 x 10^-6 mm Hg

Atmospheric density: at 0 km

1,200 g/m^3

Atmospheric density: at 50 km

1.3 g/m^3

Atmospheric density: at 100 km

8.0 x 10^-4 g/m^3

Atmospheric density: at 160 km

1.5 x 10^-6 g/m^3