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Chapter 16 Study Review. Concepts to know…. How is a nebula held together? Gravity pulls while pressure pushes apart. Concepts to know…. What is this?. Concepts to know…. Comets vs Asteroid vs Meteoroid. Comets: Small body of ice, rock, & gas Comes from Oort cloud
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Concepts to know… How is a nebula held together? Gravity pulls while pressure pushes apart
Concepts to know… What is this?
Concepts to know… Comets vs Asteroid vs Meteoroid • Comets: • Small body of ice, rock, & gas • Comes from Oort cloud • Elliptical Orbit of the sun
Concepts to know… 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… Asteroids
Concepts to know… 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… Inner Planets vs Outer Planets • Inner Planets • aka terrestrial planets • Dense • Rocky • Outer Planets • aka Gas Giants • Larger • Atmosphere of gas
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
Vocabulary to Know… Astronomical unit Eclipse Prograde rotation Retrograde rotation Satellite Solar nebula