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Universe

QuestionAnswer
universe includes all of our planets, sun asteroid belt and more
big bang theory the theory of how our universe forms. it says that we started out as a single mass, then exploded suddenly
precision a very slow movement of earths axis that traces a cone shape over 26,000 years
nutation movement of a rotational axis
electromagnetic radiation a form of energy that includes gamma rays, x-rays, ultraviolet light, visible light, infrared radiation, microwaves and radio waves
nebula cloud of dust and gas that is in space
inertia if an object is in motion, it will stay in motion. if an object is at rest, it will stay at rest.
geocentric people used to think that Earth was in the center of the Universe, so this describes the model
rotation the spinning of an object on its axis
perihelion when the orbit of the planet is closest to the sun
Barycenter the center of mass of 2 or more objects
electromagnetic spectrum arrangement of electromagnetic radiation based on their wavelength
nuclear fusion how the sun produces its energy. it occurs when less massive nuclei combine into massive nuclei.
centripetal force the force that makes an object follow a curved path
heliocentric describes how the sun is at the center of our universe
revolution the movement of an object around another object, like Earth moving around the sun
aphelion when the planet is farthest away from the sun on the planets orbit
gravity the force that pulls all objects to it
doppler effect change in frequency of electromagnetic or sound waves caused by the motions of the source and the person observing
radiation transfer of energy through space by electromagnetic waves
Created by: c.reiman
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