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10/20/10 Aim: How did the Universe Originate?

10/20/10 Aim: How did the Universe Originate?. Do Now: What is the Universe? How did the Universe originate? HW. R&H pp. 38-39, A&E #1-6. Parts of the Universe. 1. Galaxies – collections of billions of stars in a formation, includes planets, moons, asteroids and meteors

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10/20/10 Aim: How did the Universe Originate?

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  1. 10/20/10Aim: How did the Universe Originate? Do Now: What is the Universe? How did the Universe originate? HW. R&H pp. 38-39, A&E #1-6

  2. Parts of the Universe • 1. Galaxies – collections of billions of stars in a formation, includes planets, moons, asteroids and meteors • 2. Solar Systems- A single star with planets, moons and asteroids orbiting it. • 3. Star- a ball of gas that creates nuclear reactions allowing it to shine. • 4. Planet- a rocky or gaseous body orbiting a star that may have moons orbiting it. • 5. Moon- a rocky body that orbits a planet.

  3. Fusion vs. Fission – a way to transform energy • Fusion- takes place in stars when light hydrogen atoms fuse together to form heavy helium atoms and in the process give off tremendous amounts of electromagnetic energy. • Fission- happens inside planets when heavier elements split to form lighter ones and in the process gives off energy in the form of radiation and heat. Also called nuclear decay or geothermal energy.

  4. Doppler EffectWhen viewing distant objects the way the wavelengths shift • Red Shift- when objects are moving away from an observer they spread out and move towards the red end of the spectrum. • Blue Shift when objects are moving towards an observer they bunch up causing the wavelengths to decrease and move towards the blue end of spectrum. “Blue towards you”

  5. 10-21-10Aim: What is the life cycle of a star? • Do Now: • 1. What evidence do we have of the big bang? • 2. What process allows a star to produce its own energy? Describe it. • HW R&H pp. 40-44, A&E #7-23

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