Transcript Types of Stars PowerPoint Research Projectx

Astronomy
H-R Diagram: Mapping the Stars by
Luminosity and Surface Temperature
Read! Pages 532-536
PowerPoint Project #2
Physical 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 #
Internet Research Project
Type of Stars in the Universe
Slide 1
Types of Stars in Universe
• PowerPoint Slide Show Explain Concept and add
picture or diagram.
• Slide #2 Main Sequence Stars
Explain: How are Main Sequence Stars
classified? (Color, temperature, size)
Life Span ( How long do these stars
exist?)
Example
Import Picture or Diagram
Main Sequence Stars
Slide 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 Stars
Slide 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 Stars
Slide 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 like
Our Sun
(low mass)
Deplete their hydrogen fuel
At the end of their life span and become a White
Dwarf. 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 STARS
Slide 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.
Nebula
Slide 7
• Why are Nebulas so important to the
formation of stars?
• Example (name)
• Import Picture
Supernova
Slide 8
• What is a Supernova?
• Why are they so important to the formation of
the larger elements in the universe?
• Example (name)
• Import picture