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12 terms

Science - Chapter 30 Stars

STUDY
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nebula
cloud of interstellar gas and dust
protostar
formed when cloud contracts and forms a disc shape with a hot condensed object at the center
neutron star
formed by collapse of supernovae. Resistance to being squeezed creates pressure that halts collapse of the core, and the core becomes this.
supernova
formed when the entire outer portion of a star is blown off in a massive explosion
black hole
small but extremely dense object in which gravity is so intense nothing can escape it, not even light
Sun
largest object in the solar system in both size and mass. average density is similar to gas giants.
photosphere
sun's atmosphere
spectrum
visible light arranged by wavelengths
constellations
groups of stars
binary star
two stars that are gravitationally bound together and orbit a common center of mass
star's temperature, luminosity, and diameter
governed by mass
fusion
sun and stars on the main sequence produce energy by pushing hydrogen into helium