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Solar System

A set of vocabulary words, to review the Solar System Unit

Asteroids Small, rocky objects that orbit the sun
Comets Astronomical object largely made of ice that travels around the Sun in an elliptical orbit
Galilean Moon Jupiter's four largest moons (Europa, Io, Ganymeade, Callisto) discovered by Galileo in 1610. The observation of these moons proved that everything doesn't revolve around the earth.
Meteoroid Small rocks and solid particles moving through space
Meteor Mass of rock or metal that has entered Earth's atmosphere
Meteorite When a meteor strikes the ground
Planets A large celestial body, smaller than a star but larger than an asteroid, that does not produce its own light but is illuminated by light from the star around which it revolves
Revolution The orbiting of one celestial body around another
Rotation The motion of an object around its axis
Solar System The sun, planets and all other objects that orbit around the sun
Sun The star that is the center of our solar system, around which the planets revolve and receive heat and light
Gravity Force of attraction between two objects
Moon The natural satellite of the Earth, visible (chiefly at night) by reflected light from the sun
Inner Planet Any of the four planets, Mercury, Venus, Earth, and Mars, whose orbits are closest to the sun
Outer Planet Any of the four planets, Jupiter, Saturn, Uranus, and Neptune, with orbits outside of Mars. These planets lie outside the asteroid belt.
Orbit The curved path of a celestial object or spacecraft around a star, planet, or moon
Created by: mrshintze