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The Solar System
Terms in this set (20)
terrestrial planets (inner)
small planets closest to the sun with rocky surfaces
gaseous/gas giants (outer)
large planets farthest from the sun made of gas
the force that keeps all objects in the solar system in motion; keeps planets in orbit around the sun
the tendency of an object to resist motion until a stronger force moves it
what are common similarities between the inner planets?
small, closest to the sun, have rocky surfaces
what are common similarities between the outer planets?
large, farthest from the sun, are composed of various gases
what two things determine gravity?
the mass of an object and the distance between two objects
the most massive planet in our solar system; can hold every planets' mass combined!
the great red spot
a giant storm on jupiter; has the width of three earths!
what is unique about earth?
it is the only planet in our solar system with liquid water on its surface; has the ability to host life
what are the four largest moons on jupiter?
io, callisto, europa, ganymede
what is unique about saturn?
it has the most impressive ring set in the solar system
why don't astronomers consider pluto a planet anymore?
astronomers believe that pluto is too small to be a planet; there are also strange icy objects behind it
hydrogen and helium
the composition of gas giants
an object in space composed of dust and ice, mixed with frozen water, methane, ammonia; has a tail that points away from the sun
a piece of rock similar to the material formed into planets; larger than a meteoroid, but smaller than a planets
a "space rock" that is still in space
a meteoroid that burns up in earth's atmosphere; considered harmless
a meteoroid that hits earth's surface; too large for the atmosphere to burn up
which planet is least dense?
saturn; in fact, it could float in our oceans!
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