1. (8th) Chapter 14-5 Cornell Notes
“Comets, Asteroids, and Meteors”

2. Chapter 14-5 Cornell Notes
Key Questions
What are the characteristics of comets?
What are meteroids, and how do they form?

3. Chapter 14-5 Cornell Notes
Key Terms
comet-
coma-
nucleus-
Kuiper belt-
Oort cloud-
asteroid-
asteroid belt-
meteroid-
meteor-
meteorite-

4. Chapter 14-5 Cornell Notes
511 × 511 - en.wikipedia.org
Paragraph 1
Solar System objects:
not just planets, moons, and sun;
also comets, asteroids, and meteroids.

5. Chapter 14-5 Cornell Notes
511 × 511 - en.wikipedia.org
Paragraph 2
comets:
“dirty snowball” of ice, dust, small rocks;
orbit usually very long, narrow ellipses;
sun’s heat creates gas/dust clouds form a long “tail”;
tail: 2 types, gas and dust;
coma: fuzzy outer layer;
nucleus: inner core.

6. Chapter 14-5 Cornell Notes
511 × 511 - en.wikipedia.org
Paragraph 3
comets:
found in Kuiper belt and/or Oort cloud, beyond Pluto;
Kuiper belt: donut shape, beyond Neptune, 100 AUs from Sun;
Oort cloud: spherical region of comets, 5,000 to 100,000 AUs from sun.

7. Chapter 14-5 Cornell Notes
511 × 511 - en.wikipedia.org
Paragraph 4
asteroids:
objects found between Mars and Jupiter;
too many/too small to be planets;
fairly circular orbits around sun;
area called asteroid belt.

8. Chapter 14-5 Cornell Notes
Check for Understanding
Turn to your partner to discuss the following:
What is a difference between comets and asteroids?

9. Chapter 14-5 Cornell Notes
511 × 511 - en.wikipedia.org
Paragraph 5
one or more asteroids hit Earth 65 mya causing mass extinction Cretaceous Period.

10. Chapter 14-5 Cornell Notes
511 × 511 - en.wikipedia.org
Paragraph 6
meteroid:
chunk of rock/dust in space;
come from comets, asteroids;
meteor: meteoroid in the atmosphere;
meteorite: meteoroid that hits the surface.

11. Chapter 14-5 Cornell Notes
Check for Understanding
How does a meteoroid become a meteorite?
It enters the atmosphere and burns up.
It enters the atmosphere and hits the surface.
It goes into orbit and stays there.