Thinkquest 2001

Game

Earth
Welcome to The Planet of Earth.

Information about Earth
Mass
kg 5.98 x 10^24
Diameter
km 12,756
Mean Density
kg/m^3 5520
Escape Velocity m/sec 11,200
Distance from the sun Shortest 91,400,000 mi (147,100,000 km)
Greatest 94,500,000 mi (152,100,000 km)
Mean 92,960,000 mi (149,600,000 km)
Rotation Period (Length of Day) Earth Hours 23.93
Revolution Period (Length of Year) Earth Days 365.26
Obliquity (Tilt of Axis)
Degrees 23.4
Orbit Inclination
Degrees 0
Orbit Eccentricity
Deviation From Circular 0.017
Mean Surface Temperature Fahrenheit 57
Maximum Surface Temperature Fahrenheit 136 (at Al Aziziyah, Libya)
Minimum Surface Temperature Fahrenheit -128.6 (at Vostok Station in Antarctica)
Visual Geometric Albedo
Reflectivity 0.39
Highest Point On Surface Mount Everest (over 8 km above sea-level)
Atmospheric Components 78% Nitrogen (N), 21% Oxygen (O), 1% Rare Gases and about 0.04% Carbon Dioxide (CO2)
Surface materials Basaltic and Granitic Rock and Altered MaterialsNumber of Satellites 1

Interesting Facts
Fifth largest planet
Supports life
4.5 to 5 billion years old
The Earth is covered with water, rock, and soil, and surrounded by air
Mount Everest, 29,028 feet (8,848 meters) above sea level, and is the highest point on the surface
The deepest part of the ocean is an area of the Marina Trench in the Pacific Ocean southwest of Guam 36,198 feet (11,033 meters) below surface.
The average ocean depth is 12,200 feet (3,730 meters)
Earth has 2 polar caps, 7 continents, and 5 oceans
70% of earth is water and 30% of earth is land
The earth has 4 layers: Crust, Mantle, Outer Core, and Inner Core
Four main kinds of changes affect the earth's surface: weathering, erosion, mass movement, and changes in the earth's crust