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Solar system

Solar System

QuestionAnswer
Astronomical Unit Used to measure far distances in space1 AU=Distance from sun to earth
Meteoroid Chuck of rock smaller them asteroid
Meteor Streak of light
Meteorite Space rock found on Earth
Asteroids Million 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 could 0.2AU
Inner planets Terrestrial planets-Mercury, Venus, Earth, Mars-Rings and moons Solid and rocky
Outer planets Gas giants-Made of ice and gas- Jupiter, Saturn, Uranus, Neptune- Rungs and Moons- Hydrogen and Helium
Planet Spherical, orbits the Sun, clears its orbit
Mercury 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
Jupiter Largest planet-Galilean Moons-Great Red Spot
Saturn Most complex ring system-Least dense planet it would float-Titan largest 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 Nickname 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 planet but not larger than its neighbor Ceres in the asteroid belt
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 plants atmosphere traps solar energy and causes the temperature to increase
Created by: user-1979333
 



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