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Published byIlene Holmes Modified over 6 years ago
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Bell Ringer 9/24 Write down three things you know about the sun.
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Chapter 29 – Stellar Evolution
29.1 Notes
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The Sun Largest object in solar system Diameter = 109 Earths across
Mass = 330,000x as massive as Earth 99% of mass in Solar System
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Fusion Combination of 2 or more light-weight atomic nuclei into 1 heavier nuclei
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Fission Splitting of 1 heavier nuclei into 2 or more light-weight nuclei
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Sun Produces energy by fusing hydrogen atoms into helium atoms
Mass is lost and becomes energy given off by sun
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Sun Move energy in variety of wavelengths in all directions
Tiny fraction comes to Earth
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In-Class Assignment Constellation Crossword Puzzle
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