-Ecliptic

-Nebular hypothesis

-Solar nebula

-Asteroid belt

-Meteoroid

-Meteor

-Meteorite

-Kuiper belt

-Comet

-Oort cloud

-Moon phases

-New moon

-Full moon

-Solar eclipse

-Lunar eclipse

1. Three general observations led to the nebular hypothesis. How does the nebular hypothesis explain these observations?

2. Why are the inner plants composed of rocky and metallic material? Briefly compare the characteristics of two of the inner planets (such as size, orbital period, atmospheric thickness, etc.)

3. Why are the outer planets primarily composed of gasses/ices rather than rocky and metallic material? Briefly compare the characteristics of two of the outer planets (such as size, orbital period, atmospheric thickness, etc.)

4. The moon is "tidal locked". What does this mean? How does this affect our view of the moon?

5. What are moon phases and why do they occur? Describe the "conditions" that produce a new moon, and the "conditions" that produce a full moon.