Stable Stars
Stars are stable when they have fusion that releases______________
energy
The star running out of _________causes it to become unstable
fuel
After running out of fuel, stars like the ______will puff up and fade away
sun
The center of the star where fusion occurs
the core
From Earth, a supernova will look like a ______ _____
guest star
The _____________between gravity and fusion pressure continues to keep the star stable
equilibrium
Stars become unstable when fusion no longer provides energy to push out against___________
gravity
More massive stars will be able to fuse heavier_________
elements
In nuclear fusion, 2 hydrogen atoms fuse to create one _______ atom
helium
After a supernova, the exploded _________ of the star float in space like a cloud
remnants
A fluctuation or ____________between pressure from fusion and forces in by gravity keep things balanced
feedback
The equilibrium between gravity and _________pressure breaks
fusion
The most massive stars will not be able to maintain balance and will collapse and bounce back, causing a __________.
supernova
This atom is the fuel for stars
hydrogen
Running out of hydrogen will cause massive stars to _________
explode
Stars remain stable because of a cycle of ______ ___ _______called a “feedback loop.
cause and effect
All systems change. "Stability" is dependent on _______
scale
How long a star lives depends on its _______
mass (or size)
Fusion of elements heavier than ________ requires more energy to get the reaction started than will be released when the particles fuse
iron
When the star collapses and then bounces back, it flings _______ and energy into space.
matter