ASTR 105 Lecture Notes - Lecture 11: Late Heavy Bombardment, Kuiper Belt, Oort Cloud
Lab AST 105 Lecture Notes 11:
• How old is our Solar System
• 4.5 Billion Years
• What is "Late Heavy Bombardment
• Early period of many meteor impacts in our Solar System
• What type of Solar Nebula started our solar system
• Protoplanetary Disk
• What happens to the spin rate of something when gravity makes it shrink
• Spins faster
• What material collects first during the formation of a planet
• Dust
• Why are inner planets rocky and outer planets gassy
• Core for outer planets have more mass, thus being able to pull gas
• What causes asteroids to stay in orderly belts around our Sun and other Stars
• Large nearby planets gravity
• What is the Oort Cloud
• Spherical Shell at the edge of the solar system with trillions of comets
• What are the two reasons comets can fall from the Oort Cloud
• Gravity from a passing star & Collisions between comets s
• What was Earths atmosphere made of before
• Mainly carbon Dioxide
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• What produced oxygen on Earth
• photosynthesis from plants
• What is Earth atmosphere made of now
• 78% Nitrogen, 21% Oxygen
• Why does Earth bulge at its equator
• Rapid rotation of the Earth
• What is Earth composed of?
• Mantle(Solid), Outer Core(Liquid), Inner Core(Solid)
• What is Pluto a member of
• The Kuiper belt
• Where is the Kuiper belt located
• Starting from Neptune extending to Pluto
• What are the difference between meteorites, meteors, and meteoroids
• Meteors- Vaporizing towards the surface of the planet
• Meteorites- Found on the ground
• Meteoroids- Flying in solar system not hitting anything
• Why can meteorites have difference compistion
• They come from different parts of broken up astroids
• What are astroids made of
• Mostly rock
• What are comets made of
• Mainly ice
• Which way do comet tails point
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