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Solar system

TermDefinition
Astronomical unit Used to measure far distance in space 1 AU= distance from Earth to sun
Meteoroid Chunks of rock smaller than asteroid
Comets Made of gas dust and ice that revolve around the sun in the kuipier belt and Oort Cloud
Meteorite Space rock found on earth
Asteroids Millions of small rock objects that orbit the sun in the asteroid belt between Mars and Jupiter
Inner plants 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
Mercury Closest planet to the sun Not the hottest - so small it lacks gravity and atmosphere
Venus Hottest planet Greenhouse affect Day is longer than a year - rotation time is longer than it’s revolution also 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 affect Occurs when a planet 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 rotates like a bowling ball
Neptune Longest period of revolution Swirling storms-windiest planet
Gas giants Jupiter, Saturn, Uranus , Neptune Nickname for the 4 outer planets
Galilean moons 4 moons Galileo discovered Around Jupiter Io, Europa, Ganymede , Callisto
Dwarf planet Pluto was the first
Meteor Streak of light
Created by: user-1978840
 

 



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