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PSQ4W2ASTRON

STARS

QuestionAnswer
Hertzsprung-Russell diagram shows the relationships and differences between stars; plots the luminosities and temperatures of stars. HR diagrams show how red giant stars are more luminous but have lower core temperatures than white dwarf stars.
Neutron star star made almost entirely of neutrons; also called a pulsar when it rotates and emits electromagnetic radiation; what’s left over after a massive star goes supernova.
Nova explosions of extra material off of a white dwarf; lasts for about a week and is much smaller than a supernova.
Planetary nebula collection of gases ejected after a star dies; when a low-mass red giant runs out of helium, it will eject its outer layers and make a planetary nebula.
Protostar formed when a nebula collapses under its own gravity; early stage of star development.
White dwarf object left over after a low mass star runs out of helium; about the size of the Earth, but it is incredibly dense.
Luminous emitting self-generated light; stars are luminous, planets and moons are illuminated
Plasma state beyond gas when particles are ionized; commonly found in stars and neon signs
Blue stars the hottest stars, while cooler stars glow red or yellow.
nuclear fusion reaction on a star which is the result of heat intense enough to fuse hydrogen into helium; source of star’s energy
main sequence star stage when star is doing nuclear fusion
pulsar forms when a neutron star starts rapidly rotating and emits pulses of electromagnetic radiation
Created by: Ruth.Miller
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