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Apologia PhySc Mod16

Apologia Physical Science Module 16 Definitions

TermDefinition
Nuclear fusion The process by which two or more small nuclei fuse to make a bigger nucleus
Nuclear fission The process by which a large nucleus is split into smaller nuclei
Critical mass The amount of isotope necessary to sustain a chain reaction
Absolute magnitude The brightness of a star, corrected for distance, on a scale of -8 to +19. The smaller the number, the brighter the star
Apparent magnitude The brightness of a star as seen in the night sky. The smaller the number, the brighter the star
Light year The distance light could travel along a straight line in one year
Galaxy A large ensemble of stars, all interacting through the gravitational force and orbiting around a common center
Created by: q on 2013-05-14



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