1- Size of the Earth:
Polar diameter 7899.83 miles
Equatorial diameter 7926.41 miles
Polar circumference 24859.82 miles
Equatorial circumference 24901.55 miles
2-Area of the earth:
Total surface area 19,69,40,000 sq.miles
Land area 5,75,06,000 sq.miles (30% of the total)
water are 13,94,34,000 sq.miles(70% of total)
Age of the earth 4.6 to 5 billion years
Density of the earth 5.52 (water has density of 1)
3-Distance of moon from earth:
Closest 2,21,456 miles
Farthest 2,52,711 miles
Average 2,38,875 miles
4-Distance of sun from Earth
Closest 91.4 million miles
Farthest 94.5 million miles
Average 92.9 million miles
Escape velocity 7 miles per second
Period of revolution of earth around sun 1 year(365 days, 6 hours, 9 minutes and 9.54 seconds)
5-Period of rotation of Earth on axis 4.09 seconds
6- Speed of Earth in orbit around the sun 8.5 miles per second
7- Volume of Earth 260 billion cubic miles
8-Weight of earth 6586 x 10 tons
9-Chemical make of the earth:
Oxygen 46.6%
Silicon 27.7%
Aluminium 8.1%
Iron 5.0%
Calcium 3.6%
Sodium 2.8%
Potassium2.6%
Magnesium 2.1%
Others 1.5%
