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21 Cards in this Set
- Front
- Back
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What fuel is used by stars to make energy?
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Hydrogen
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What do you call the cloud of dust and gases that pulled together to make a star?
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Nebula
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This is the process that produces star energy
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Thermonuclear fusion
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What unit is used to measure distances in deep space?
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Light Year
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What is the speed of energy?
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300,000 km per second
( 300,000 km/sec ) |
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This is the feature of star that you study to determine its temperature.
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Color
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What instrument is used by astronomers to determine the composition of a star?
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Spectroscope
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What do you call the part of the sun where light is first emitted?
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Photosphere
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What is an exploding star called?
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Supernova
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Why is our sun the brightest star in the sky?
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It is the closest.
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What do you call the harmful radiation rays from the sun that can cause skin cancer?
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Ultraviolet
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These are dark, cooler areas on the sun's photosphere.
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Sunspots
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When we see the sun, we are really looking at its .....
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Photosphere
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Where is energy given off the bye sun produced?
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Core
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What feature of the sun is usually associated with prominences and solar flares?
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Sunspots
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If you want to know what gases a star is made of, you would need to analyze what?
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Spectrum
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A star's luminosity is also called its.....
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Brightness
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what is the name of the graph that is used to help explain stellar evolution?
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H-R diagram
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The hottest stars are what color?
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Blue white
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Our galaxy, the Milky Way is what kind of galaxy?
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Spiral
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Solar energy is the result of what?
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thermonuclear fusion
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