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Asteroide
Asteroide
Asteroide
Asteroide
Asteroide
Asteroide
Asteroide
Asteroide
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Asteroide

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  • 1. Asteroïden door Thomas Vyncke
  • 2. Aarde bedreigd? <ul><li>8 november 2011: </li></ul><ul><ul><li>“ Asteroïde langs de aarde gescheerd” - De Standaard </li></ul></ul><ul><ul><li>2005 YU55 scheert rakelings langs de aarde - Deredactie.be </li></ul></ul>
  • 3. Wat? <ul><li>ontdekking 1801: Ceres (940km) </li></ul><ul><li>ruimtelichamen </li></ul><ul><li>elliptische baan om de zon </li></ul><ul><li>asteroïden <-> kometen (staart) </li></ul><ul><li>asteroïden < planeten </li></ul><ul><li>+ 200.000 gekend </li></ul>http://upload.wikimedia.org/wikipedia/commons/f/fc/Ceres_optimized.jpg
  • 4. Naam <ul><li>asteroïde in atmosfeer = meteoor </li></ul><ul><li>meteoor die op aarde crasht = meteoriet </li></ul><ul><li>asteroïde = planetoïde = kleine planeten </li></ul>
  • 5. Soorten <ul><li>3 ≠ types: samenstelling (C-, S-, M-) </li></ul><ul><ul><li>C-type: rijk aan koolstof </li></ul></ul><ul><ul><li>S-type: rijk aan silicium </li></ul></ul><ul><ul><li>M-type: rijk aan nikkel/ijzer </li></ul></ul><ul><li>≠ helderheid </li></ul>
  • 6. Waar? <ul><li>gordels </li></ul><ul><li>hoofdgordel (Mars-Jupiter) </li></ul><ul><li>kuipergordel </li></ul><ul><li>elliptische baan </li></ul>http://upload.wikimedia.org/wikipedia/commons/f/f3/InnerSolarSystem-en.png
  • 7. Gevaar? <ul><li>elliptische baan asteroïde ∩ baan aarde </li></ul><ul><li>inslag => kraters </li></ul><ul><li>uitsterven diersoorten </li></ul><ul><li>preventie: </li></ul><ul><ul><li>inventariseren </li></ul></ul><ul><ul><li>atoombom </li></ul></ul><ul><ul><li>… </li></ul></ul>http://images.cdn.fotopedia.com/flickr-3339413705-hd.jpg
  • 8. Bronvermelding <ul><li>http://www.slideshare.net/kennedyliam/the-asteroid-belt </li></ul><ul><li>http://www.slideshare.net/joverba/asteroids-and-comets </li></ul><ul><li>http://www.slideshare.net/openfireten/asteroids </li></ul><ul><li>http://www.standaard.be/artikel/detail.aspx?artikelid=DMF20111109_047&word=astero%c3%afde </li></ul><ul><li>http:// www.deredactie.be/cm/vrtnieuws/buitenland/1.1150700 </li></ul>

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