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33 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Word |
Definition |
Use Word in Sentence
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Star
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Ball of gases that gives off light and heat
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We have stars in our solar system
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Nebula
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A cloud of gas and dust in space.
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A nebula is what started the world
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Protostar
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dense material in the center of a nebula that is about to become a star
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The protostar gives off ligt and heat and then a new star is born
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Binary stars
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Two stars that revolve around each other
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Most of the stars are double or binary
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Star cluster
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Large group of stars that travel together through space.
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Are in mulitiple star systems
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Spectrum
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Pattern of different colors of light coming from an object
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Contains red, oarange, yellow, green, blue, indigo,and viplet
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Spectrograph
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Device that measures the spectrum of an object
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Contains a camera to focusthe spectrum and record it on photographic or electronic film
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Spectroscopy
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study of light coming from objectsin space
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Scientists use the spectoscopy
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Magnitude
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A way to measure a star's brightness.
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The negative magnitudes are usually brighter
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Main sequence star
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A star that falls within a long, narrow, band across the H-R diagram.
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A stars position on thehr diagram
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Red Giant
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large bright star that is finally cool
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They give off a great deal of light
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Supergiant
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very large star that is fairly cool
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Are bigger than red giants
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white dwarf
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Very small, hot star
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Are hot but they are very small
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Nova
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Explosion where the outer layers of a star are blown off
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When a white dwarf will blow off its outer layers in a huge explosion
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Supernova
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Violent explosion where a star is blown apart
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After a supernova the starturns into a nuetron or a black hole
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Core
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Center of the Sun
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Makesup of 10percent of the suns diameter
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Photosphere
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Inner layer of the suns atmosphere
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The visible surface of the sun
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Chromosphere
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Layer of the Suns atmosphere above the photosphere
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Can only be seen under special conditions
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Corona
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Outer layer of the suns atmosphere
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The temprature of the corona is about 1500000 degrees celcius
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sunspot
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Dark, cool area on the Sun's surface.
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Usully move in gruops arond the sun
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Prominence
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Stream of gas that shoots high above the suns surface
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Formin the chromoshere or the photoshphere
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Solar Flare
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eruption of electrically charged particles from the surface of the sun
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Thet send streamsof electrically charged particles ot into space
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Nucleus
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Centeror core of an atom
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Energy comesfrom the nucleus
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Fusion
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Reaction in which atomic nuclei combine to form larger nuclei.
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For hydrogen nuclei combine to form one helium nucleus
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Constellation
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Group of stars that form a pattern in the sky
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There is alot of constellatons
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Galaxy
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Huge collection of starsgas and dust that travel toghether through space
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There is a lot of galaxys
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ellipitical galaxy
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Galaxy shaped like a ball or slightly flattened ball.
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Canlook like slightl flattened ball
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Irregular galaxy
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galaxy with no definite shape
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Have one or more spiral spiral arms that branch out from threcentes
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Spril galaxy
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galaxy shaped like a flattened disk with spiral arms
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Most common galaxy
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Big bang
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Explosion that may have begun the universe about 14 billion years ago.
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The big bang is what we believe is the start of the universe
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Black hole
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massitve star that has collapsed and whose gravity is so powerful that it pulls in everything even light |
You can not flash light in black holes
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Quasar
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continous burst ofbrilliant light andenormous energy from a very massive black hole |
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