Space

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  • Created by: Tom Bowen
  • Created on: 28-05-14 10:48
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  • Space
    • Order of Planets
      • 1. Mercury (MY)
      • 2. Venus (VERY)
      • 3.Earth (EXCELLENT)
      • 4. Mars (MOTHER)
      • 5. Jupiter (JUST)
      • 6. Saturn (SENT)
      • 7. Uranus (US)
      • 8. Neptune (NINE)
      • 9. Pluto (PIES)
    • Formation of the Solar System
      • 1. due to GRAVITY a HYDROGEN gas/dust collapsed and formed THE SUN
      • 2. GRAVITATIONAL forces-KINETIC+HEAT ENGERY
      • 3. dense center (PROTOSTAR)  surrounded y thin disc. NUCLEAR REACTION turned HYDROGEN-HELium
      • 4. GRAVITY=particles collect together=PLANETARIUMS. = PLANETS
      • 5. large planets collide=larger
        • Rocky + pulled closer to sun
      • 6. very large planets made of gas
    • Ateroids
      • ASTEROID BELT = MARS & JUPITER
        • thousands on asteroids
      • what are they
        • size of a pebble to 1,000 km
        • left over material from creation
    • Comets
      • ELLIPTICAL orbit
        • only appears every few years
        • speeds up near sun, slows down when further away
          • RADIATION PRESSURE
            • tail forms when near sun-melting
              • tail points away from sun
      • ice and rocks
    • Gravity
      • force of attraction
      • force increases with mass
      • force decreases with distance
      • smaller body=larger orbit- high speed
    • Satellites
      • natural or manmade
        • moon=natural
        • Geostationary/polarorbitting=manmdae
          • GEOSTATIONARY
            • used for communication
            • high orbitting over equator,
            • stay at same point
            • orbit same time as earth
          • POLAR ORBITTING
            • used for monitoring weather+surveilance
            • low orbit, passes over North+South poles
            • many times a day
    • Sun's source of energy. THEORIES
      • 1.burning coal (this gives 3000 years)
      • 2. comet falling into sun=heat energy (20million years0
      • 3. sun+earth formed same time (20million)
      • .4. Erosion needed to be hundreds of millions
      • 5. Darwin species= hundreds of millions)
    • star light
      • white light=continuous spectrum
      • white pass through gas cloud
        • absorption spectrum - black lines
          • identify different gases
          • tells us tempertaue
      • sun-Hydrogen + Heluim
    • Nuclear fusion
      • sun=ball of gas
      • core temp=15 million-allows nuclear fusion
      • radiates outwards+converted to surface by currents
      • solar flares blast particles-solar wind
        • magnetic field protects earth
      • sun=half way through life
    • Red shift
      • light-continuous spectrum, red -violet
      • red-end=longer wavelenght+lower frequency
      • violet-end=short wavelength+high frequency
      • if light moves towards us-wavelength gets shorter +frequency gets higher
        • shifted to blue
      • if light moves away-wavelength longer+frequency gets lower
        • shifted to red
      • light emitted by distant galaxies have ABSORPTION LINES=HYDROGEN
      • all galaxies move away. amount of red shift-how fast galaxies are moving
        • greater shift=greater speed

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