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7 Cards in this Set
- Front
- Back
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What is a Star?
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An object in space made of hot gas,with a core like a thermonuclear reactor.
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What is Interstellar Matter made of?
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It is made of gas and dust.
(dust is only 1% of total mass of all interstellar matter) |
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What is a Black Hole?
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After a star twenty-five times the size of the sun explodes in a supernova,it becomes a black hole and collapses into itself.
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Hertzsprung-Russell Diagram
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bright&hot bright&cool
massive intermediate low dim&hot dim&cool |
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What is a Supernova?
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An explosion caused by a supergiant using up all of its fuel and then collapsing on its self.
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What is Fusion?
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Hydrogen atoms combine to form the heavier element Helium.
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What is the Doppler Effect?
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The change in wavelength because of motion.
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