Teacher Guide & Answers

1. A star’s color indicates its temperature. A red star is cool, a yellow star is medium in temperature, and a blue-white star is hot. 2. A large star that begins to use up the fuel in its. core expands to become a supergiant. In time, its. core collapses, and the star explodes, becoming a. supernova. The star’s core, if it’s … ................
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