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33 Cards in this Set
- Front
- Back
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The sunspot cycle is about how many years?
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11
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A violent eruption on the sun's surface that throws solar wind particles out into space is ......
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Solar flare
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The rapidly rotating core of a supernova is called a .....
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Pulsar
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What is a very large group of stars, dust, and gas called?
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Galaxy
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What is the color of the hottest stars?
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Bluish-white
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What is the fuel of a star during most of its life?
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Hydrogen
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What happens during fusion in a star?
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helium is made from hydrogen
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This is the end result of the collapse of a star's core; no energy escapes
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Black Hole
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Thermonuclear fusion happens in what part of the sun?
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Core
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What causes the Northern Lights?
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solar radiation entering the Earth's atmosphere
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On the H-R diagram, what do you call the band of stars that are plotted diagonally from the upper left to the lower right?
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Main sequence stars
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What force holds the galaxy together?
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Gravity
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What do you call an exploding star?
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Supernova
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When a star is moving away from you, its spectrum will shift to what color?
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Red
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What protects us from ultraviolet energy?
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magnetosphere
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As our star dies, it will become a .....
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Red giant
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Our solar system is in what galaxy?
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Milky Way
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Who classified the galaxies?
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Hubble
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When hydrogen fuses into helium _______ is lost from the atom?
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Energy
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What unit do we use to measure distances in deep space?
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Light years
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What measures the movement of an object in space using the spectra of light?
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Doppler Effect
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What is made from hydrogen during fusion?
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Helium
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What instrument is used to study the star's elements?
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Spectroscope
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Label the parts of the sun
Core photosphere sunspot prominence chromosphere |
A. photosphere
B. Chromosphere C. Prominences D. Sunspot E. Core |
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Which group of stars is brighter than their temperature would indicate?
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White Dwarfs
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The outer layer of the sun's atmosphere which is seen only during an eclipse is the ....
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Corona
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How can scientists figure out what materials are in a star?
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study the spectrum
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What do you call the cooler, darker area on the sun's surface?
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Sunspot
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The amount of light that the star really produces is called....
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Actual brightness
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The Milky Way might be what kind of galaxy?
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Barred spiral
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What can solar flares affect on earth?
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Radio/TV reception
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The apparent brightness of a star is related to its .....
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distance from us and temperature
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How is a star formed?
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As a result of the effect of gravity on particles in the nebula
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