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Solar system

Topic 6 vocab

QuestionAnswer
Astronomical Unit Used to measure far distance in space 1 AU=Distance from earth to sun
Meteoroid Chuck of rocker smaller than 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 Jupiter
Comets Made of gas, dust, and ice, revolve around the Sun in the Kuiper Belt and Oort Cloud
Inner plants Terrestrial planets Solid and rocky Mercury, Venus, Earth, and Mars
Outer planets Gas giants Made of ice and gas
Mercury Closest planet to the sun NOT THE HOTTEST- so small it lacks gravity and atmosphere
Venus HOTTEST planet Greenhouse effect Day longer than a year rotation time is longer than it’s revolution Acid clouds
Earth Only planet with know 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 planet’s 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 the Titan-a moon
Uranus Rotation axis is tilted 90 degrees so rotates like a bowling ball
Neptune Longest period of revolution Swirling storms- windiest planet
Gas Giants Jupiter, Saturn, Uranus, and Neptune
Galilean Moons 4 moons Galileo discovered around Jupiter Io, Europa, Ganymede, and Callisto
Dwarf Planet Pluto was the first Same as planet, but not larger than it’s neighbors Ceres in asteroid belt
Created by: user-1979166
 

 



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