Earth Presentation
Transcript: Our Planet Earth How big is Earth? 12,756.3 kilometers in diameter (about 7926.3 miles) fits 151 Plutos inside of it. Temperature? averages 61 degrees Fahrenheit coldest temperature: -128.6 degrees F in Vostok Station, Antarctica hottest temperature: 136.4 degrees F in El Azizia, Libya 365.25 days=one revolution 24 hours=one rotation Earth is made mostly out of iron, magma, rock, oxygen, silcon, aluminum, calcium, sodium, potassium, and magnisum Earth has four layers: the inner core, outer core, mantle, and crust Earth's layers Inner Core inner most layer solid iron, may contain sulfur, nickel, and traces of other elements 9,000 to 13,000 degrees Fahrenheit Outer Core liquid layer mostly iron, plus some sulfur and nickel 7,200 to 9,000 degrees Fahrenheit Mantle second outer most layer liquid layer magma or rock that is so under pressure that it flows slowly and is 1,800 miles thick divided into two layers, upper mantle and lower mantle Crust outer most layer made of oxygen, silcon, aluminum, iron, calcium, sodium, potassium, and magnisum. we live on it The Atmospheric Layers 1. Troposphere- surface, we live in it 2. Stratosphere- 12 miles above the surface, has ozone 3. Metosphere- 31 to 53 miles above the surface and thick enough to burn meteors 4. Thermosphere- 53 to 375 miles from Earth, very thin atmosphere, auroras accur here 5. Exosphere- 6,200 miles above Earth, atoms and molecules escape into space, and satilites orbit the Earth here How is Earth Different? has the only atmosphere that is 21% oxygen humans are able to survive on Earth liquid water on surface Fun Facts Earth is very fragile, with plates that create earthquakes Earth has seasons, because it is tilted slightly It is an exact sphere It is the densest planet in our solar system every winter 7 septrillion snow crystals fall each year named the "Goldilocks Planet" because Earth is not too hot, not too cold one theory of how Earth was formed is that about 4.6 bya stray materials formed together by the force of gravity Earth's only moon Temperature ranges from 253 to -243 degrees Fahrenheit 3,745 miles in diameter formed about 4.6 billion years ago 239,000 miles away from Earth takes 27 days for one orbit very weak atmosphere and no liquid water=no life marias, highlands, and craters is some of what the moon is covered with The Moon The Moon https://www.youtube.com/watch?v=gKdxPw9HDUs Video! Any questions? Thanks For Watching! Sources http://nineplanets.org/earth.html http://utahscience.oremjr.alpine.k12.ut.us/sciber00/7th/earth/sciber/erlayers.htm https://solarsystem.nasa.gov/planets/moon/needtoknow www.bbc.co.uk/science/earth/earth_timeline/earth_formed https://www.quora.com/Who-created-earth http://www.bbc.co.uk/schools/gcsebitesize/geography/natural_hazards/tectonic_plates_rev1.shtml http://www.srh.noaa.gov/jetstream/atmos/layers.html http://www.space.com/18175-moon-temperature.html http://nineplanets.org/luna.html http://www.planetsforkids.org/planet-earth.html http://space-facts.com/earth/ http://science.howstuffworks.com/moon1.htm
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