Stars Review
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16 terms
Terms | Definitions |
|---|---|
Absolute magnitude | Measure of the amount of light a star actually gives off |
Black hole | Object in space that is so dense that nothing, including light can escape its gravity field |
Distance | Light years are used to measure _____. |
Fusion | Reaction in which the nuclei of two atoms fuse to create a new element and energy is released |
Hydrogen | First element that fuse when a star forms |
Nebula | Large cloud of gas and dust, in which stars form |
Main Sequence Star | Category of stars that includes 90% of all stars, including our sun |
Star | Giant ball of hot, glowing gas |
White dwarf | Stage in the life of a star in which the core contracts after all the helium has used up and the outer layers escape into space. |
Neutron star | Star that contain only neutrons in its core that is produced after the core of a supernova collapses |
Giant | A star whose surface layers have expanded and cooled after all of the hydrogen is used up and starts burning helium |
Helium | Fuel burned by giant stars after hydrogen |
Carbon | Fuel burned by white dwarf stars following helium |
Accretion | Process that adds atoms to the core of a forming star |
Small | _____ stars live longer. |
HRdiagram | Chart that shows the relationship between brightness and temperatures of stars |
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