Explorations: Introduction to Astronomy (Arny), 6th Edition

Chapter 11: Meteors, Asteroids and Comets

Questions for Review

1
What is the difference between a meteor, a meteoroid, and a meteorite?
2
How do we know what asteroids are made of?
3
Where are most asteroids found?
4
What are Apollo asteroids?
5
What shape are typical asteroids and how do we know? Why is Ceres not so shaped?
6
What do asteroids tell us about the formation of the Solar System?
7
What makes a "shooting star"?
8
How is a meteor heated?
9
What creates meteor showers? When do some occur?
10
What is the Oort cloud? What is the Kuiper belt?
11
What is the life history of a comet from the Oort cloud to an object we see?
12
What creates a comet's tail?
13
Why are there two tails to some comets?
14
How do we know asteroids have a composition similar to that of some meteorites?
15
What evidence is there that the Earth has been hit by asteroids or comets?
16
What was the Tunguska event?
17
Why do some scientists believe that asteroids and comets play a role in mass extinctions?
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