Planet Earth
Transcript: Discovery No one discovered planet Earth, it was formed over 4 billion years. Life was then first formed about 1 billion year later. Distances Order from the sun Earth is the 3rd planet away from the sun Distance from the sun in AU In km Orbit and Rotation Number of days to orbit around the sun: 365 days Aphelion: 94,509,460 miles Perihelion: 91,402,640 miles Length of one day: 24 hours Composition Core Composition: It is composed of primarily of nickle-iron alloy, they figure this because of the elements in the solar system Surface Composition: Rocky body, highest in density, also has water Atmosphere Major Gases: Nitrogen Oxygen Argon Carbon Dioxide Minor Gases: Iodine Nitrogen Dioxide Nitrogen Oxide Carbon Monoxide Surface Conditions Wind Speed: Average: 11.1 MPH Temperature Ranges: Coldest: -129 degrees Warmest: 136 degrees Surface Pressure: 1013.25 hp 1 ATM (atmosphere) Snow, Rain, Sleet, Hail, Hurricanes, Tornado, Tsunamis, hot weather, cold weather Water Earth has oceans, lakes, rivers Exploration The Marianas Trench is 35,798.6 ft deep. In 1995 a Japanese probe made it to the bottom, however a U.S. Navy bathyscaphe made it to the bottom in January 3,1960 with U.S. Navy Lieutenant Don Walsh and Jacques Piccard on board. Habitability The Habitation on planet earth is the perfect place for humans to live. It has a great supply of food and water. Terra forming Things do need to change to keep living on our planet. we need to go to alternatives such as the gases that we burn that pollute the air. Moons Its the easiest object to find in the night sky. you see it almost every night. It takes 27.3 days to rotate on its axis and to orbit around the earth. We on ca see one side of the moon and depending on the sun light determines how much sun we see. It is a Grayish color with many craters on it. Planet Appearance It is blue, white, some what green and brown. It is round and very pretty to look at. It looks like it glows at night 1 AU Earth Measurements 1m 24,902 Mass: 755,000km Weather 9.80665m Volume: Mean Density: Equatorial Circumference: Gravity: 1,097,509,500,000,000,000,000 Earth got its name from Germans, it simply means ground/ soil/ dirt. 3.2 ounces per cubic inch