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The solar system

TermDefinition
Astronomical unit To measure far distances in space 1 AU= distance from earth to sun
Meteoroid Chunk of rock smaller than 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 jupiter
Comets Made of gas,dust,and ice, revolve around the sun in the Kuiper Belt and Oort cloud
Inner planets Trrrestrial 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 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 temperatures Protective atmosphere Liquid water
Mars Largest known mountain Olympics 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
Created by: user-1979401
 

 



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