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PowerPoint Project #2Physical Science AM Block
• Sign out Laptop responsibly• Write down computer #• Respect internet agreement on school
research only (No shopping, social media, off task surfing)
• Log Off and Return at period’s end• Plug in electricity in proper slot• Sign return/in correct computer #
Types of Stars in Universe
• PowerPoint Slide Show Explain Concept and add picture or diagram.
• Slide #2 Main Sequence StarsExplain: How are Main Sequence Stars
classified? (Color, temperature, size)Life Span ( How long do these stars exist?)ExampleImport Picture or Diagram
Main Sequence StarsSlide 2
• Energy produced by fusion of hydrogen into helium and heavier elements
• Most stars are in the main sequence
• Equilibrium exists between gravity collapsing the star and nuclear fusion exploding the star.
Supergiant StarsSlide 3
• Largest stars in universe• 10 to 1 Million times
bigger than our Sun• High mass stars
consume all their hydrogen fuel in a shorter time than our sun (“just” a few million years).
• Detonate as supernova
Giant StarsSlide 4
• Low mass stars that deplete their hydrogen fuel at the end of their life span enlarge to “Giant” status.
• Betelgeuse is a red giant, 20 times bigger and 14,000 times brighter than the Sun.
White Dwarf Stars Slide 5
Stars likeOur Sun (low mass)Deplete their hydrogen fuelAt the end of their life span and become a WhiteDwarf. First, the star collapses which heats it up again into a Red Giant for a “short time” ( 1 Billion years – compared to 10 Billion years in its “regular” main sequence life span. Helium (product from fusion) is now transformed into carbon).
Information about STARSSlide 6
• How do color and temperature provide important information about stars in the universe?
• What are the ranges of color?• What are the ranges of temperature?• Import picture or graph.
NebulaSlide 7
• Why are Nebulas so important to the formation of stars?
• Example (name)• Import Picture