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20 Cards in this Set
- Front
- Back
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Axis
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An imaginary line about witch a body rotates.
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refracting telescope
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A telescope that uses a converging lens to collect light.
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electromagnetic spectrum
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The range of wavelengths or frequencies over witch electromagnetic radiation extends.
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solar eclipse
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an eclipse in which the sun is obscured by the moon.
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lunar eclipse
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an eclipse in which the moon appears darkened as it passes into the earth's shadow.
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electromagnetic spectrum
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the range of wavelengths or frequencies over which electromagnetic radiation extends.
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space probe
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an unmanned exploratory spacecraft designed to transmit information about its environment.
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space shuttle
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a rocket-launched spacecraft, able to land like an unpowered aircraft, used to make repeated journeys between the earth and earth orbit.
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space station
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a large artificial satellite used as a long-term base for manned operations in space.
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solar system
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the collection of nine planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
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comet
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a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
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meteor
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a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.
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meteorite
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a meteor that survives its passage through the earth's atmosphere such that part of it strikes the ground. More than 90 percent of meteorites are of rock, while the remainder consist wholly or partly of iron and nickel.
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asteroid
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a small rocky body orbiting the sun.
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satellite
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an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
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radio telescope
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an instrument used to detect radio emissions from the sky, whether from natural celestial objects or from artificial satellites.
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observatory
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a room or building housing an astronomical telescope or other scientific equipment for the study of natural phenomena.
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sphere
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a round solid figure, or its surface, with every point on its surface equidistant from its center.
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equinox
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Twice a year when day and night are equal lengths.March 21 and sept22.
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rocket
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a cylindrical projectile that can be propelled to a great height or distance by the combustion of its contents, used typically as a firework or signal.
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