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Physical Science

Apologia Physical Science Module 16 Terms

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 can travel in a strait line in one year
Galaxy a large ensemble of stars, all interacting through the gravitational force and orbiting around a common center
Created by: sheflips
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