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Solar system

TermDefinition
Mercury Closest planet to the sun NOT THE HOTTEST-so small it lacks gravity and atmosphere
Venus Hottest planet Greenhouse effect
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 planet’s atmosphere traps solar energy and causes the temperature to increase
Astronomical unit Used to measure far distance in space 1 Au=Distance from earth to dun
Meteoroid Chunk of rock smaller then asteroid
Meteor Streak of light
Meteorite Space rock found on earth
Asteroid Millions of small rocky objectsbthat orbit then
Created by: user-2015120
 

 



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