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Comets, Asteroids, and Meteors- Oh My!

Delve into the fascinating world of comets, asteroids, and meteors in our solar system. Learn about their characteristics, orbits, and impact on Earth. Discover the diversity of these celestial bodies and their unique features.

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Comets, Asteroids, and Meteors- Oh My!

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  1. Comets, Asteroids, and Meteors- Oh My!

  2. Asteroid • BrainPop

  3. Asteroids • Definition: objects that are too small and numerous to be considered planets • Rocky – 75% of all asteroids • Iron (metals) – 7% of all asteroids • Mixed (rock and iron blended) – 18% of all asteroids

  4. Asteroid Belt The region between the orbits of Mars and Jupiter, where many asteroids are found.

  5. Asteroids…

  6. Asteroids • Not all asteroids are located in the asteroids belt and can pass near Earth • Jupiter’s gravity kept the asteroids from forming a planet • Some asteroids orbit just before and after Jupiter • Largest asteroid, Ceres, is 580 mi across but most are less than a few miles across

  7. Asteroid Impacts • Scientists think an asteroid impact near Mexico caused the dinosaur extinction.

  8. Asteroid Impact crater in Canada http://www.mnh.si.edu/

  9. Comets • BrainPop

  10. Comets • Definition: chunks of ice and dust that usually has a long, narrow elliptical orbit • Comet means long haired star

  11. Comet • 3 parts: • Nucleus • Coma • Tail: always points away from sun Nucleus and coma make up the head .

  12. Comet

  13. Parts Explained • Nucleus – hard rock/ice object • Coma – heated up gas that form a cloud around the nucleus • Tail – dust particles pushed away from the comet by solar radiation; gets bigger as comet gets closer to the sun

  14. Comet Orbits • Comets have long, narrow elliptical orbits • Short period comets are found in the Kuiper Belt • Long period comets are found in the Oort Cloud • Sometimes, comets get too close to the sun, and then…

  15. NASA

  16. Famous Comets Hale- Bopp

  17. More…

  18. More… Comet Hyakutake 1996

  19. More…

  20. More…

  21. In 1994, Comet Shoemaker-Levy 9 collided with Jupiter.

  22. Meteors • Video

  23. Meteors • 3 types: • Meteor: a streak of light in the sky produced by the burning of a meteoroid in Earth’s atmosphere • Meteoroid: a chunk of rock or dust in space • Meteorite: a meteoroid that has hit Earth’s surface

  24. Meteoroids • Meteoroids are small chunks of rock and dust left over from asteroids and comets that pass by the Earth. • They are found within the path of the Earth’s orbit around the sun. • They can be rocky, iron, or mixed.

  25. Meteors Meteor Impact Crater in Arizona. • 3 types: • Meteor: a streak of light in the sky produced by the burning of a meteoroid in Earth’s atmosphere • Meteoroid: a chunk of rock or dust in space • Meteorite: a meteoroid that has hit Earth’s surface

  26. Meteors…

  27. More…

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