Explorations: An Introduction to Astronomy (Arny), 7th Edition

Chapter 11: Small Bodies Orbiting the Sun

Questions for Review

1
What makes a "shooting star"?
2
What is the difference between a meteor, a meteoroid, and a meteorite?
3
How is a meteor heated?
4
What kinds of meteorites are there?
5
Where are most asteroids found?
6
What shape are typical asteroids and how do we know? Why does Ceres not have this shape?
7
How do we know that asteroids have a composition similar to that of some meteorites?
8
What do asteroids tell us about the formation of the Solar System?
9
What are near-Earth objects?
10
What evidence makes astronomers believe that Pluto is strongly influenced by Neptune?
11
How did the discovery of a moon orbiting Pluto help astronomers better understand this object?
12
Where did Pluto and other TNOs form? How did they get to where they are today?
13
What parts make up a comet? What are they made of? How do we know?
14
Why are there two tails to some comets? What are they made of?
15
What is the Oort cloud? What is the Kuiper belt?
16
What is the life history of a comet from the Oort cloud that has become an object we see?
17
What creates meteor showers? When do some occur?
18
What evidence is there that the Earth has been hit by asteroids or comets?
19
What was the Tunguska event?
20
Why do some scientists believe that asteroids and comets play a role in mass extinctions?
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