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Meteors, Asteroids, &
     Comets


                        2
Feb 15, 2013


  http://www.youtube.com/watch?v=36MEsWC1Pzc
Feb 15, 2013
  MOSCOW—A meteor streaked through the
  sky and exploded Friday over Russia's Ural
  Mountains with the power of an atomic
  bomb, its sonic blasts shattering countless
  windows and injuring hundreds of people.
  The spectacle deeply frightened thousands,
  with some elderly women declaring the
  world was coming to an end.

  The meteor — estimated to be about 10
  tons — entered the Earth's atmosphere at
  a hypersonic speed of at least 54,000 kph
  (33,000 mph) and shattered about 30-50
  kilometres (18-32 miles) above the ground,
  the Russian Academy of Sciences said in a
  statement.
Feb 15, 2013




http://www.youtube.com/watch?v=dBvotWfR3j4
Feb 15, 2013




 Area of impact
Feb 15, 2013
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Feb 15, 2013
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Feb 15, 2013
Feb 15, 2013




“A suspected meteorite fragment may have made this
  hole in a lake in Chelyabinsk Oblast, Russia.”
Feb 15, 2013
Feb 15, 2013
Feb 15, 2013
Meteoroids, Meteors and Meteorites
Meteoroid – a piece of rock moving through space
 (smaller than asteroids, likely rocky chunks that
 have broken off of asteroids and planets)
Meteoroids, Meteors and Meteorites




    ... What is this a picture of?
Meteoroids, Meteors and Meteorites
Meteor – a meteoroid that enters Earth’s atmosphere
 and burns up (Shooting stars are meteors)
Meteoroids, Meteors and Meteorites
Meteorite – a meteoroid that passes through
 Earth’s atmosphere and reaches the ground
 without burning up.
Asteroids
• An object that
  ranges in size
  from approx.
  1km to 50km
  wide

• Found in the
  asteroid belts
Asteroid and Meteorite Impacts
65 Million Years Ago – an asteroid the size of a
mountain struck the Earth, some scientists believe
this caused a mass extinction of thousands of
species
05 asteroids comets meteors
Asteroid and Meteorite Impacts


Vredefort Crater
-largest and oldest crater
-South Africa
-diameter = 250 km
-2 billion years old
Asteroid and Meteorite Impacts


Manicouagan Crater
-fifth largest crater
-Quebec, Canada
-diameter = 70 km
-212 million years old
Asteroid and Meteorite Impacts

Clearwater Craters
-two lake-filled craters
-Quebec, Canada
-diameter = 32 km
(West crater) & 22 km
(East crater)
-290 million years old
Asteroid and Meteorite Impacts

Chicxulub Crater
-third largest crater
-Yucatan Peninsula,
Mexico (mostly
underwater)
-diameter = 170 km
(size of a small city)
-65 million years old
(time of extinction of
the dinosaurs)
Asteroid and Meteorite Impacts

June 30th, 1908
– an object hit in
  Siberia and
  destroyed an area
  larger than the
  whole city of
  Kingston Ontario
Comets




An object composed of rocky material, ice, and gas
which orbits the sun.
Has 2 tails – one of gas/water vapour, and one of
dust.
Comets
The radiation from the Sun releases gases and
particles in the comet and the tails form.

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05 asteroids comets meteors

  • 1. 1
  • 3. Feb 15, 2013 http://www.youtube.com/watch?v=36MEsWC1Pzc
  • 4. Feb 15, 2013 MOSCOW—A meteor streaked through the sky and exploded Friday over Russia's Ural Mountains with the power of an atomic bomb, its sonic blasts shattering countless windows and injuring hundreds of people. The spectacle deeply frightened thousands, with some elderly women declaring the world was coming to an end. The meteor — estimated to be about 10 tons — entered the Earth's atmosphere at a hypersonic speed of at least 54,000 kph (33,000 mph) and shattered about 30-50 kilometres (18-32 miles) above the ground, the Russian Academy of Sciences said in a statement.
  • 6. Feb 15, 2013 Area of impact
  • 13. Feb 15, 2013 “A suspected meteorite fragment may have made this hole in a lake in Chelyabinsk Oblast, Russia.”
  • 17. Meteoroids, Meteors and Meteorites Meteoroid – a piece of rock moving through space (smaller than asteroids, likely rocky chunks that have broken off of asteroids and planets)
  • 18. Meteoroids, Meteors and Meteorites ... What is this a picture of?
  • 19. Meteoroids, Meteors and Meteorites Meteor – a meteoroid that enters Earth’s atmosphere and burns up (Shooting stars are meteors)
  • 20. Meteoroids, Meteors and Meteorites Meteorite – a meteoroid that passes through Earth’s atmosphere and reaches the ground without burning up.
  • 21. Asteroids • An object that ranges in size from approx. 1km to 50km wide • Found in the asteroid belts
  • 22. Asteroid and Meteorite Impacts 65 Million Years Ago – an asteroid the size of a mountain struck the Earth, some scientists believe this caused a mass extinction of thousands of species
  • 24. Asteroid and Meteorite Impacts Vredefort Crater -largest and oldest crater -South Africa -diameter = 250 km -2 billion years old
  • 25. Asteroid and Meteorite Impacts Manicouagan Crater -fifth largest crater -Quebec, Canada -diameter = 70 km -212 million years old
  • 26. Asteroid and Meteorite Impacts Clearwater Craters -two lake-filled craters -Quebec, Canada -diameter = 32 km (West crater) & 22 km (East crater) -290 million years old
  • 27. Asteroid and Meteorite Impacts Chicxulub Crater -third largest crater -Yucatan Peninsula, Mexico (mostly underwater) -diameter = 170 km (size of a small city) -65 million years old (time of extinction of the dinosaurs)
  • 28. Asteroid and Meteorite Impacts June 30th, 1908 – an object hit in Siberia and destroyed an area larger than the whole city of Kingston Ontario
  • 29. Comets An object composed of rocky material, ice, and gas which orbits the sun. Has 2 tails – one of gas/water vapour, and one of dust.
  • 30. Comets The radiation from the Sun releases gases and particles in the comet and the tails form.

Notas del editor

  1. http://www.youtube.com/watch?v=Bst48wcpHK4 (Last day of the dinosaurs) http://www.youtube.com/watch?v=-ffhp3COlgY (strangest things about the universe – Not related to lesson, but I didn’t know where to copy the link)
  2. http://www.youtube.com/watch?v=36MEsWC1Pzc
  3. http://www.youtube.com/watch?v=dBvotWfR3j4
  4. http://www.youtube.com/watch?v=dBvotWfR3j4
  5. http://www.youtube.com/watch?v=dBvotWfR3j4
  6. http://www.youtube.com/watch?v=dBvotWfR3j4
  7. http://www.youtube.com/watch?v=dBvotWfR3j4
  8. http://www.youtube.com/watch?v=dBvotWfR3j4
  9. http://www.youtube.com/watch?v=dBvotWfR3j4
  10. http://www.youtube.com/watch?v=dBvotWfR3j4
  11. http://www.youtube.com/watch?v=dBvotWfR3j4
  12. http://www.youtube.com/watch?v=dBvotWfR3j4
  13. http://www.youtube.com/watch?v=dBvotWfR3j4
  14. http://www.youtube.com/watch?v=dBvotWfR3j4
  15. http://www.youtube.com/watch?v=dBvotWfR3j4
  16. http://www.youtube.com/watch?v=dBvotWfR3j4
  17. Meteor that “made” the dinosaurs: http://www.youtube.com/watch?v=Xox5phBB-Ig (Dino meteor – Part 1) http://www.youtube.com/watch?v=u_5MU8ZQN-E (Dino meteor – Part 2) http://www.youtube.com/watch?v=tLXpIev71OM (Dino meteor – Part 3) http://www.youtube.com/watch?v=tl4ZUkL-3U8 (Dino meteor – Part 4) http://www.youtube.com/watch?v=TfB8kU8mqGI (what if a large meteor hits the earth)