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Solar system

TermDefinition
Astronomical unit Used to measure for distances in space 1 AU = distance from earth to sun
Meteoroid Chunk of rock that is smaller then an asteroid
Meteor Streak of light
Meteorite Space rock found on earth
Asteroids Millions of small rocky objects that orbit the Sun in the asteroid belt between mars and jupiterb
Comets Made of gas dust and ice revolve around the sun in the killer belt
Inner planet Terrestrial planets Solid and rocky Mercury , Venus,Earth , Mars
Outer planets Gas giants Made of ice and gas Jupiter , Saturn , Uranus , Neptune Rings and moons Hydrogen and helium
Planet Spherical orbits the Sun clears its orbit
Mercury Closet planet to the sun Not the hottest - so small it lacks gravity and atmosphere
Venus Hottest planet Greenhouse effect Day is longer then a year - rotation time is longer than it’s revolution Acid clouds
Earth Only planet with known life Moderate temperatures Protective atmosphere Liquid water
Mars Largest known mountain - Olympus Mons Possible signs of life
Terrestrial planets The four inner planets
Greenhouse effect Occurs when a planets atmosphere traps Solar energy and causes the temperature to increase
Jupiter Largest planet Galilean moons Great Red Spot
Saturn Most complex ring system Least dense - it would float Titan - largest moon
Uranus Rotation axis is titled 90 degrees So rotates like a bowling ball
Neptune Longest period of revolution Swirling storms - windiest planet
Gas giants Jupiter , Saturn Uranus , Neptune Nickname for the four outer planets
Gallilean moons 4 moons Galileo discovered around Jupiter - Io , Europa , Ganymede, Callisto
Dwarf planets Pluto was the first Same as a planet but not larger then its neighbors Ceres in the asteroid belt
Created by: user-1979318
 

 



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