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(AST) Star Cycle

QuestionAnswer
Average stars have shorter lifetimes than massive stars because they consume fuel quicker. True or False? false
What is a star's first stage? stellar nebula (clouds of gas and dust)
Do clouds collapse onto cores, eventually reaching the temperature to start nuclear fusion? yes
What process powers a star? nuclear fusion
What are the 2 requirements for nuclear fusion? hydrogen and helium (temperature and pressure)
How does a star move onto the red giant phase? when it runs out of hydrogen and cannot balance the inward gravitational pull and the outward pressure.
What happens in the red giant phase? outer layers expand, cool, and change colors
What happens when a high-mass stars runs out of elements to use? it explodes into a supernova
What are the 2 main elements in supernovas? gold and uranium
If the star is small, it'll become a dense object called... a neutron star
If the star is extremely massive, its core will collapse again and transform into a... black hole
What is the final stage of a low-mass star's life? white dwarf
What are the 2 possible final stages of a high-mass star's life? black hole or neutron star
What happens in planetary nebula? critically unstable star pulsates, producing strong stellar winds that blow off its outer layers and expose the core. It transitions into a white dwarf.
What is a white dwarf? a tiny, bright, hot core left behind after the outer layers drift away.
Do supernovas send shockwaves outward through the star? yes
Do white dwarves produce energy, do they glow faintly? no, yes
What are neutron stars made of, and what are they under? neutrons, extreme gravity
Do neutron stars have strong magnetic fields? yes
Do black holes have a strong gravitational pull, to the point where light cannot reflect or emit? yes
How can we see activity near black holes? colliding materials that produce heat and light.
How do black holes grow in size? by absorbing gas, dust, stars, and sometimes nearby black holes.
Created by: Beia Aria
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