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Solar system

TermDefinition
Astronomical unit Used to measure far distance in space 1 AU= Distance from earth to sun
Meteroid Chunks of rock 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 the revolve around the Sun in the Kuiper Belt and Oort Cloud
Inner planets *Terrestiral 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
Mercy * closest planet to the sun *Not the hottest- so small it lacks gravity and gravity
Venus * hottest planet *greenhouse effect *day is longer than a year-rotation time is longer than it’s revolution *acid clouds
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 planets atmosphere traps Solar energy and causes the temperature to increase
Jupiter *largest planet *galliean 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 9p degrees so rotates like a bowling ball
Neptune * longest period of revolution * swirling storms- windiest outer plantes
Gas ginats Jupiter, Saturn, Uranus, Neptune nickname for the outer planets
Galliean moons 4 moons Galileo discovered around Jupiter, lo, Europa, Ganymede,Callisto
Dwarf planet *pluto was the first *same as planet but not larger than it’s neighbors *ceres in the asteroid belt
Planet Spherical, orbits the Sun, clears it’s orbit
Created by: user-1978832
 

 



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