3. Small Bodies in the Solar System- pg. 77 Why do you think meteors and asteroids are so dangerous to the Earth? Observation: DAWN http://content.zdnet.com/2346-9595_22-92648- 2.html

4. COMETS? What are COMETS? A body of ice, rock and cosmic dust loosely packed together. “Dirty Snowballs” http://amazing-space.stsci.edu/resources/explorations/comets/lesson/make_nf.html

5. Why do comets have “tails”? A comet’s tail always points away from the sun (blown by the solar wind)

7. Comet’s Orbit

8. What are ASTEROIDS ? Small, rocky bodies that revolve around the sun Most are in the asteroid belt

10. What is the largest asteroid? Ceres –914 km across914 km

11. What are meteoroids? Meteoroid – a small, rocky body that revolves around the sun. –think: mini “Asteroid”

12. What is a Meteor? Meteor – the bright streak of light –“Shooting Stars” –think: “Meteor Shower”

13. What are Meteorites? Meteorite – A meteoroid that strikes the ground. –think: Can hold it “rite” in your hand!

14. Meteor Crater- AZ Near Flagstaff 1200 m across formed about 50,000 years ago

17. Let’s Make a Flow Map!

18. Meteoroids in Orbit

19. Comet’s Orbit

20. What is The Torino Scale ? A system to rate the hazard level of an object moving toward Earth Scale from 0 to 10 and color coded RED is bad news