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Stars
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What is a Star? 1. Hot body of glowing gas
2. Stars are formed when gas and dust are drawn together by gravity and nuclear fusion begins (nebula)
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Star Size & Temp 3. Range in size from 450x smaller to 1000x larger than the sun Temperatures range from 3,000ᵒC to over 50,000ᵒC
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Star Sizes
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Star Color b. Cooler stars appear red
4. The color of a star is determined by it’s temperature a. Hot stars appear blue b. Cooler stars appear red
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5-6. Energy produced by the star is nuclear fusion Hydrogen Helium
Star Energy 5-6. Energy produced by the star is nuclear fusion Hydrogen Helium
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**The lower the magnitude the brighter the star**
Star Magnitude 7. How bright a star appears on Earth is its apparent magnitude 8. Actual brightness of the star is absolute magnitude **The lower the magnitude the brighter the star**
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H-R Diagram
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H-R Diagrams Explained Video
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Life Cycle of a Star
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Life Cycle of a Star
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Life Cycle of a Star Brain Pop
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Parallax the apparent shift or movement of a nearby object against a distant background, when viewed from two different positions Used to measure distance to nearby stars
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Parallax Thumb in front of the eyes
Speedometer (not digital) viewed by the driver vs. the passenger A flagpole when viewed from opposite ends of a sidewalk
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