Star Creation
All stars are born in this.
Stellar Nebula
Stars spend their STABLE life on the______ of the HR diagram
Main Sequence
What is the explosion of a large mas star called?
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Supernova
What are the three main sections you can see on an H-R Diagram?
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White dwarfs, main sequence, giants
What color stars are the hottest?
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Blue
What is a stellar nebula? Why is it sometimes called a stellar nursery?
What size stars live longest?
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Small-average stars
What happens at the end of an extremely massive stars life (what will it turn into)?
Black hole
What two things does an H-R diagram compare?
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Luminosity and temperature
How do stars look to us VS what do they actually look like?
Look small are HUGE
What force brings gas and dust together to form a star?
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Gravity
What do all stars turn into when they leave the main sequence?
A variation of a red giant (massive, supermassive)
What are the three things that stars can become at the end of their lives?
Name the size with each for 200 extra points
White dwarf-small/average
Neutron star-large
Black hole-super large
Where is our star "the sun" on an H-R diagram? (which group)
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The Main Sequence
How far are stars from eachother even though they look very close?
many lightyears - 6 trillions of miles
How are white dwarfs created?
Death of an average mass star - core left behind
What are some things that can change over the lifetime of a star?
(name 3 - 100 extra if you can name 5)
Color, size, temperature, class, brightness, mass, radius
While large stars supernova, what do average stars explode into?
Planetary nebula
What are the three main sections of the HR diagram?
Red giants, main sequence, white dwarfs
Describe the temperature and brightness of white dwarfs? What about red giants?
White Dwarfs: Hot and dim
Super giants: Cool and Bright
Describe nuclear fusion and how it makes a star shine?
2 hydrogen atoms come together to form helium
What is a protostar?
Star right after formation
What causes the death of a star?
Runs out of fuel - collapses- inner core remains and cannot support outer layers of the star
What is different about the X axis on H-R diagram compared to other graphs?
Starts with larger numbers and goes down (reversed)
What is the name of the star that is closest to us OTHER than our sun (4.3 lightyears / over 24 trillion miles away)
Proxima Centauri