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15 Cards in this Set
- Front
- Back
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photosphere
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the layer of the sun that gives off light
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corona
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the sun’s atmosphere
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sunspot
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a darkspot on the sun; an area which is cooler than the rest of the photosphere
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solar flare
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a brief burst of energy from the sun’s photosphere
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solar wind
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a fast-moving stream of particles thrown into space by a solar flare
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solar system
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a group of objects in space that move around a central star
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planet
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a large object that moves around a star
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asteroids
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small objects made up of rock and dust that move around the sun
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comet
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a small mass of dust and ice that orbits the sun in a long, oval-shaped path
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orbit
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the path one body in space takes as it revolves around another body
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fusion
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join together
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Universal Law of
Gravitation |
all objects in the universe are attracted to all other objects
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moon
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another name for a natural satellite that is round, rocky and cratered
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elliptical
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the “egg shaped” path
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mass
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the amount of matter in an object
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