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Solar System Vocab.


Solar System Consists of the Sun, planets, their moons, meteors, asteroids, and comets.
Milky Way Galaxy The galaxy in which our solar system is located.
Gravity The force that pulls two objects together; it pulls us toward Earth and it keeps the planets in motion around the sun.
Astronomy The study of the moon, stars and other objects in space.
Axis An imaginary line that passes through Earth's center and the north and the south poles, about which the Earth rotates.
Rotation The spinning motion of a planet about its axis.
Revolution The movement of an object around another object.
Orbit The path of an object as it revolves around another object in space.
Tides The daily rise and fall of Earth's waters on shores.
Gravity The attractive force between two objects; its magnitude depends on their masses and the distance between them.
Satellite Any object that revolves around another object.
Phase One of the shapes of the moon as seen form Earth.
Crater A round pit of the moon's surface.
Maria Dark,flat regions on the moons surface.
Core The central part of the sun, where nuclear fusion occurs.
Comet A ball of ice and dust whose orbit is usually a long, narrow eclipse; it has a "glowing tail" up to 100 million miles long.
Asteroids Objects revolving around the sun that are too small and too numerous to be considered planets.
Asteroid belt The region of the solar system between the orbits of mars and jupiter, where many asteroids are found.
Meteoroid A chunk of rock or dust in space.
Meteorite A meteoroid that has hit Earth's surface.
Space Station A man made laboratory orbiting Earth.
Created by: 3101988