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Earth

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Kristy Keeler

on 28 May 2013

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Transcript of Earth

By:Kristy Introduction Everybody Probably knows a lot about Earth.We all live on Earth.We breath in the air.I don't think that people realize how great this planet is. There are a couple of things that are special about Earth. Such as having an atmosphere that doesn't let any floating particles in space to enter. If we didn't have a atmosphere nobody would be able to live.Another special feature about Earth is that if we didn't have water we would not be living.



Measurements
The Earth is 92,960,000 miles from the sun.Earth has a circumference of 24,901 miles. The diameter of the Earth is 7,918 miles.Earth travels around the sun in 365 1/4 days. The average temperature of the Earth is 15 degrees Celsius . We are moving 67,000 miles per hour in an orbit. The Earth is tilting on its axis 23.5 degrees. It takes 24 hours for the Earth to rotate on its axis. In the galaxy the Earth moves at a speed of 220 kilometers per second.In space the Earth moves at a speed of 1,000 kilometers per second. What is the Earth made of? Earth is made up of 32% iron, 30% oxygen, 15% silicon, 14% magnesium, 3% sulfur, 2% nickel. What is Earth's atmosphere made of? The Earth's atmosphere is made up of various gases.78% nitrogen, 21% oxygen, it also has snow, rain, and humidity. The Earth has one moon How was the Earth formed? Scientists believe that in space, particles were floating around, then the particles were attracted to each other and they made a huge spinning disc. The center of the disc was the sun. Then the rings in the outer rings turned into large fiery balls of gas molten liquid that cooled and turned into a solid form. Then 4 to 5 billion years ago they turned into planets. Earth has a symbol that is a circle with a cross in the middle. Earths symbol Earth Who discovered Earth? People thought that that Earth was the center of the universe. It took a couple of years for everybody to realize what was going on in space. They also thought that the sun moon and the stars rotated around the Earth. Some people thought that the Earth was flat.Some people also thought that the Earth was a sphere. People also thought that the plants were revolving around Earth. In the 16th century polish mathematics and astronomer Nicolas Copernicus showed a heliocentric model of the solar system. Where it showed that the Earth and all the other planets revolved around the sun. https://www.google.com/search?q=earths%20&aq=f&um=1&hl=en&biw=1280&bih=899&ie=UTF-8&sa=N&tab=iw&ei=BViSUaTmOcSx0AHtgoHIDg#hl=en&gs_rn=12&gs_ri=psy-ab&tok=ejg7x2G1YGYwkf1SpNbEMA&suggest=p&pq=earths &cp=16&gs_id=21&xhr=t&q=how+far+is+earth+from+the+sun&es_nrs=true&pf=p&sclient=psy-ab&oq=how+far+is+eartj&gs_l=&pbx=1&fp=1&biw=1280&bih=899&bav=on.2,or.r_qf.&cad=b&sei=3JCbUaqfNbKr4AO1vIDYDQ https://www.google.com/search?q=earths%20&aq=f&um=1&hl=en&biw=1280&bih=899&ie=UTF-8&sa=N&tab=iw&ei=BViSUaTmOcSx0AHtgoHIDg#hl=en&sclient=psy-ab&q=what+is+the+diamiter+of+earth&oq=what+is+the+diamiter+of+earth&gs_l=serp.3..0i10l4.203481.220002.3.220361.29.27.0.2.2.0.594.6119.0j15j5j3j1j2.26.0...0.0...1c.1.12.psy-ab.j1QKas_O_Ec&pbx=1&bav=on.2,or.r_qf.&bvm=bv.46471029,d.dmQ&fp=922520578ac97148&biw=1280&bih=899 http://curious.astro.cornell.edu/question.php?number=356 http://www.space.com/17816-earth-temperature.html http://www.rcn27.dial.pipex.com/cloudsrus/atmosphere.html http://www.universetoday.com/15048/what-is-the-earth-made-of/ http://www.universetoday.com/47176/earths-axis/ http://www.universetoday.com/47181/earths-rotation/ http://starryskies.com/articles/2007/11/earth-speed.html http://www.livescience.com/32294-how-fast-does-earth-move.html http://www.livescience.com/32294-how-fast-does-earth-move.html http://starryskies.com/articles/2007/11/earth-speed.html http://www.universetoday.com/76509/how-was-the-earth-formed/ http://www.universetoday.com/76509/how-was-the-earth-formed/ http://www.universetoday.com/76509/how-was-the-earth-formed/ http://www.universetoday.com/76509/how-was-the-earth-formed/ http://www.universetoday.com/76509/how-was-the-earth-formed/ http://www.universetoday.com/14512/the-symbol-for-planet-earth/ http://www.universetoday.com/26853/who-discovered-the-earth/ http://www.universetoday.com/26853/who-discovered-the-earth/ http://www.universetoday.com/26853/who-discovered-the-earth/ http://www.universetoday.com/26853/who-discovered-the-earth/ http://www.universetoday.com/26853/who-discovered-the-earth/ http://www.universetoday.com/26853/who-discovered-the-earth/ http://www.universetoday.com/26853/who-discovered-the-earth/ http://www.universetoday.com/92453/how-many-moons-does-earth-have-2/ Resources https://www.google.com/search?q=earths%20&aq=f&um=1&hl=en&biw=1280&bih=899&ie=UTF-8&sa=N&tab=iw&ei=BViSUaTmOcSx0AHtgoHIDg#hl=en&gs_rn=12&gs_ri=psy-ab&tok=ejg7x2G1YGYwkf1SpNbEMA&suggest=p&pq=earths%20&cp=16&gs_id=21&xhr=t&q=how+far+is+earth+from+the+sun&es_nrs=true&pf=p&sclient=psy-ab&oq=how+far+is+eartj&gs_l=&pbx=1&bav=on.2,or.r_qf.&bvm=bv.46471029,d.dmQ&fp=922520578ac97148&biw=1280&bih=899



https://www.google.com/search?q=earths%20&aq=f&um=1&hl=en&biw=1280&bih=899&ie=UTF-8&sa=N&tab=iw&ei=BViSUaTmOcSx0AHtgoHIDg#hl=en&sclient=psy-ab&q=what+is+the+diamiter+of+earth&oq=what+is+the+diamiter+of+earth&gs_l=serp.3..0i10l4.203481.220002.3.220361.29.27.0.2.2.0.594.6119.0j15j5j3j1j2.26.0...0.0...1c.1.12.psy-ab.j1QKas_O_Ec&pbx=1&bav=on.2,or.r_qf.&bvm=bv.46471029,d.dmQ&fp=922520578ac97148&biw=1280&bih=899

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http://www.seasky.org/solar-system/solar-system.html Human Exploration
1958
Project Mercury
This program resulted in the first American to go into space and the first American to orbit the Earth.

January 1962
Project Gemini
It was designed to extend the existing manned space flight program by launching a two man craft.

1963
Project Apollo
It was a goal to have a man land on the moon.

April 12, 1981
Space Shuttle Program
Space Shuttle Columbia only spent to two days in space and it tested everything in space then safely returned to Earth.

1923
International Space Station
It would act as if it were a launching site for further human missions to the moon or Mars. Earth By Dana Meachen Rau http://www.eoearth.org/ http://www.ncseonline.org/encyclopedia-earth
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