earth. home sweet home 3 rd planet from the sun home sweet home the largest of the 4 rocky planets...
Post on 19-Dec-2015
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![Page 1: EARTH. HOME SWEET HOME 3 rd Planet from the Sun HOME SWEET HOME The largest of the 4 rocky planets 12756km](https://reader035.vdocuments.us/reader035/viewer/2022062320/56649d2b5503460f949fff15/html5/thumbnails/1.jpg)
EARTHEARTH
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HOME SWEET HOME
• 3rd Planet from the Sun
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HOME SWEET HOME
• The largest of the 4 rocky planets
• 12756km
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HOME SWEET HOME
• Hot dense core
• Mantle
• Thin rocky outer crust
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HOME SWEET HOME
• 149.6 million km away from Sun
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HOME SWEET HOME
• 365.26 days to orbit the Sun
• Orbits at an average speed of 108000km/s
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HOME SWEET HOME
• 23.93 hours to rotate on its axis
• 23.5° tilt on axis
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HOME SWEET HOME
• Acceleration due to gravity is 9.81m/s2
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HOME SWEET HOME
• Not a perfect sphere
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HOME SWEET HOME
• Water
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STUDYING THE EARTH
• Thales proposed first model of a Geocentric universe
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STUDYING THE EARTH
• 1735
• Team of scientists attempted to determine size of Earth
• Triangulation
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STUDYING THE EARTH
• 1774
• Nevil Maskelyne
• Schiehallion Experiment
• Attempted to determine mass of Earth
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STUDYING THE EARTH
• 1797
• Henry Cavendish determines weight of Earth
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STUDYING THE EARTH
• 1944
• Arthur Holmes
• Theory of Continental Drift
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STUDYING THE EARTH
• 1946 first photos of Earth from space
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STUDYING THE EARTH
• 1953
• Clair Patterson
• Mass spectrography
• Uranium and lead
• Age of Earth
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STUDYING THE EARTH
• Space Race– Apollo 8 (1968)
• RADARSAT-1– 1995
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Life on Earth
• Greenhouse gases
• Water stabilizes temp
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SOURCES• http://homepage.mac.com/dvhscience/SpaceAcademy/Projects/before2004/moon_triangulate/fourmilabimage.jpg• http://www.aerospaceweb.org/question/astronomy/solar-system/solar-system.jpg• http://www.spacetoday.org/images/SolSys/Earth/EarthBlueMarbleWestTerra.jpg• http://www.bnsc.gov.uk/assets/channels/education/ae/Earth_interior.gif• http://www.badastronomy.com/pix/bablog/2006/earthsun.jpg• http://www.windows.ucar.edu/the_universe/uts/seasons_orbit.5x7.jpg• http://cache.eb.com/eb/image?id=66792&rendTypeId=4• http://www-b.jpl.nasa.gov/images/earth/bulge_post1997_browse.jpg• http://worthyourweight.files.wordpress.com/2007/11/flat-earth.jpg• http://www.people.cornell.edu/pages/nrw22/astro/images/triangulation.jpg• http://cache.eb.com/eb/image?id=64197&rendTypeId=4• http://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Schiehallion_NW_ridge.jpg/300px-Schiehallion_NW_r
idge.jpg• http://pubs.usgs.gov/gip/dynamic/graphics/Fig2-5globes.gif• http://content.answers.com/main/content/wp/en-commons/thumb/c/c3/180px-Cavendish-lab.jpg• http://www.hcc.mnscu.edu/chem/abomb/Mass_Spec_of_U.jpg• http://www.bethel.k12.ct.us/bhs/information/science/wcmaindiagram2.jpg• http://www.airspacemag.com/space-exploration/FEATURE-FirstPhoto.html#• http://solarsystem.nasa.gov/multimedia/gallery/GPN-2001-000009.jpg• http://www.primidi.com/images/earth_with_and_without_life.jpg• http://www.koshlandscience.org/exhibitgcc/images/causes02.jpg