Chapter 15 Stars, Galaxies, & the Universe. Vocabulary to Know Black hole Nuclear fusion Parallax Pulsar Quasar Supernova Spectrum.

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Presentation transcript:

Chapter 15 Stars, Galaxies, & the Universe

Vocabulary to Know Black hole Nuclear fusion Parallax Pulsar Quasar Supernova Spectrum

Key Concepts Color of a star & temperature – Red stars are the ____________ – Blue stars are the ___________

A spectroscope give astronomers info about a stars ______________ & _____________ Key Concepts What do the black lines indicate?

Absolute Magnitude vs Apparent Magnitude – Apparent magnitude is bright a star as viewed from Earth – Absolute magnitude is seeing how bright each star would be if all stars were 32.6 light years away from Earth. Key Concepts

Key Concepts – Life Cycle of a Star

Key Concepts: HR Diagram Hint: TEST QUESTION

Time …. Approximately 14 billion years ago All matter was compressed Pressure caused an explosion Extreme heat to cooling within seconds Cosmic radiation – Noise left over from Big Bang Key Concepts – Big Bang Theory

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