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EIS The Solar System

QuestionAnswer
Force A push or pull exerted on an object.
Law of Universal Gravitation The scientific law that states that every object in the universe attracts every other object.
Mass The amount of matter in an object.
Weight A measure of the force of gravity acting on an object.
Inertia The tendency of an object to resist a change in motion.
Planet An object that orbits a star, is large enough to have become rounded by its own gravity and has cleared the area of its orbit.
Dwarf Planet An object that orbits the sun and is spherical but has not cleared the area of its orbit.
Satellite An object in space that orbits or circles around a bigger object. There are two kinds of satellites: natural (such as the moon orbiting the Earth) or artificial (such as the International Space Station orbiting the Earth).
Asteroid One of the rocky objects revolving around the sun that are too small and numerous to be considered planets.
Meteor A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere.
Meteoroid a small body moving in the solar system that would become a meteor if it entered the earth's atmosphere. "space rocks".
Comet A ball of frozen dust and rock that orbits the sun and has a tail that glows.
Astronomical Unit (AU) A unit of distance equal to the average distance between Earth and the sun, about 150 million kilometers.
Galaxy A large collection of stars held together by gravity.
Universe All of space, all of the matter, and all the energy in it. This includes the parts we can see and the parts we can't.
Terrestrial Planet The name often given to the four inner planets: Mercury, Venus, Earth, and Mars.
Gas Giant The name often given to the outer planets: Jupiter, Saturn, Uranus, and Neptune.
Created by: user-1929490
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