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Solar system

TermDefinition
Mercury The closest planet to the sun Not the hottest-so small it lacks gravity and atmosphere
Venus Hottest planet Greenhouse effect Day is longer than a year-rotation time is longer than its revolution Acid clouds
Earth Only planet with known life Moderate temperature 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 planet - it would float Home of titan-a moon
Uranus Rotation axis is tilted 90 degrees so it rotates like a bowling ball
Neptune Longest period of revolution Swirling storms windiest planet
Gas giants Jupiter Saturn Uranus Neptune nick name for the 4 outer planets
Galilean moons 4 moons Galileo discovered around Jupiter -Io, Europa, Ganymede, Callisto
Dwarf planet Pluto was the first Same as a planet but not larger than its neighbors Ceres is in the asteroid belt
Astronomical unit Used to measure far distances in space 1 au=distance from earth to sun
Meteoroid Chunk of rock, smaller than asteroid
Meteor Streak of light
Meteorite Space rock found on earth
Asteroids Millions of small rocky objects that were with the sun and the asteroid belt between Mars and Jupiter
Comets Made of gas, dust, and ice revolve around the sun and the Kuiper belt and Oort cloud
Inner planets Terrestrial planets Solid and rocky Mercury Venus earth Mars
Outer planets Gas giants Made up of ice and gas Jupiter, Saturn, Uranus Neptune Rings and moons Hydrogen and helium
Planet Spherical, orbits the sun, clears its orbit
Created by: user-1979066
 

 



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