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6th Grade Science Test 7 #2

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Across
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First space flight to land on the moon
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Any object that orbits a larger object
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People who journey into outer space
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Any back and forth motion that repeatedly follows the same pattern
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The orbit that allows a satellite to remain in the same spot above the earth at all times
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An unmanned spacecraft launched specifically to explore the unknown
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The high point of a wave is?
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Is the turning back or turning aside of any wave when it hits an obstacle
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a device used to make distant objects appear clearer and closer
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Whatever carries a wave
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First artificial object ever put into space
Down
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Rotating stars that emit directional beams of radio waves
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The movement of energy from one place to another
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A single rise or depression in a wave
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A device that splits light into a spectrum for analysis
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Russian space station designed for modules to be added
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The low point of a wave
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The first US Space Station
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First US Satellite
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Space station being developed by a group of over 15 nations
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the term that describes how fast a wave oscillates