Earth

EARTH!  The Atmosphere: 77% of earth is made up of water and 21% is oxygen with traces of argon and carbon dioxide and water. The Surface: 71% of Earth's surface is covered with water. Earth is the only planet where water can exist in a liquid form. Here are some distances: Earth is 149,600,000 km from th sun. Its the third planet from the sun. Its also the fifth largest planet in the solar system.

Revolution: 365 and 1/4 days. Rotation: 24 hours Earth has one natural Satellite, its the moon. Where we got the name from: The name Earth derives from Old English and Germanic. In Roman Mythology Earth was Tellos which means fertile soil. In Greek- Gaia, terra mater-which means mother Earth. Earths symbol is a circle with a line straight down the middle and a line straight across the center, so it looks like one big plus sign inside the sphere. Here are some facts about Earth: 1. The diameter is 12.756 km 2. The mass is 5.972e24 kg 3. The temperature at the center of te core is 7500 k which is hotter than the surface of the sun. 4. Here is Earths: 34.8% - iron 29.5% - oxygen 15.2% - silicon 12.7% - magnesium 2.4% - nickel 1.9% - sulfur 0.05% titanium 5. Earth is the densest major body in the solar system. 6. The relation of Earth and the Moon slows the Earth's rotation by about 2 milliseconds per century. The current research shows that about 900 million years ago there were 481 18 hour days in a year. 7. Earth has a semi strong magnetic feild but keep in mind that its NOT too strong but there is some force there. 8. Earth has one satellite, the moon, its distance is 384 km and the radius is 1738 km. 9.Earths magnetic field and its relationship with the solar wind also produce the van Allex radiation belts and a pair of doughnut shaped rings of ionized gas(or plasma) trapped in orbit around the Earth. 10. The outer elt stretches from 19,000km in altitude to 41,000 km 11. the inner belt lies between 1,300 km and 7,600 km in distance 12. There are eight major plates, North American Plate, South American Plate, Antarctic Plate, Eurasioan Plate, Nazca Plate, and the Pacific Plate. 13. There are also 20 or more smaller plates. 14. In the short period of 500.000 years or so erosion and tectonic processes destroy and recreate most of Earths surface. 15. The oldest fossils of living things are less than 3.9 billion years old.