1. Chapter 16 Study Review

2. Concepts to know… How is a nebula held together? Gravity pulls while pressure pushes apart

3. Concepts to know… What is this?

4. Comets vs Asteroid vs Meteoroid Concepts to know… Comets: Small body of ice, rock, & gas Comes from Oort cloud Elliptical Orbit of the sun

5. Comets vs Asteroid vs Meteoroid Asteroid Rocky body Orbits the suns Smaller than planet Most located in asteroid belt between Mars & Jupiter Concepts to know…

6. Asteroids

7. Meteoroid Smaller than asteroid & comets – Piece of asteroid or comet Not seen unless falling through atmosphere Meteor = meteoroid gone through Earth’s atmosphere & landed “shooting star” Concepts to know…

8. Inner Planets vs Outer Planets Concepts to know… Inner Planets aka terrestrial planets Dense Rocky Outer Planets aka Gas Giants Larger Atmosphere of gas

9. Moons How did our moon form? Io – highly volcanic moon of Jupiter Miranda – It’s inside out – Moon of Uranus Triton – Neptune’s moon, has retrograde rotation

10. Vocabulary to Know… Astronomical unit Eclipse Prograde rotation Retrograde rotation Satellite Solar nebula