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Ivack 6th Chapter 20
15 cards·by livack
solar system model with the sun in the middle
heliocentric
solar system model with the Earth in the middle
geocentric
shape of planets orbit
ellipse
inner planets are also refered to as the ___________ planets
terrestrial
outer planets are also refered to as the __________
gas giants
gas giants are made of hydrogen and ________
helium
Which extends farther
the Kuiper belt or the Oort cloud?
A comet has three parts: nucleus, tail, and ________
coma
collections of ice, dust, and small rock particles
comet
chunk of rock or dust
meteroid
too small and too numerous to be considered planets
asteroids
form from comets or asteroids
meteoroids
when a meteoroid enters the Earth's atmosphere it is called a _________
meteor
when a meteor hits Earth's surface it is called a ________
meteorite
the asteroid belt is between Mars and __________
Jupiter