Test 3 (Lessons 8, 9, 10, 11)

Term Definition
asteroid metallic, rocky irregularly shaped bodies without atmosphere that orbit the sun.
dwarf planet A celestial body that is round and orbits the sun but does not clear the path of its atmosphere.
planet A body that is round and orbits the sun. It clears the path of its orbit.
composition of planets The elements that make up planets such as rock, minerals, and gases.
atmosphere of planets The mass of air and gases that surround a planet.
solar system The sun and the planets, dwarf planets, moons, asteroids, and comets that revolve around it.
What separates the inner and outer planets The asteroid belt
List the outer planets Jupiter, Saturn, Uranus, and Neptune.
List the inner planets Mercury, Venus, Earth, and Mars
What are 2 main reasons for a planet's temperature? Its atmosphere and how close it is to the sun.

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