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8 Unit Voc Review 1
Unit Vocab Review 1 - Hillery West
| Term | Definition |
|---|---|
| aberration | an undesirable effect caused by a defect, such as color or twisting of an image by the lens of a telescope |
| apparent | observed and noted without taking into consideration factors that may not be known; what is seen |
| celestial | of the heavens |
| cluster | a group of constellations; in astronomy , a related group of galaxies with a common gravitational pull |
| constellation | an apparent group of stars which seem to form a pattern and are given a name |
| deterioration | the state of becoming worse over time |
| disintegrating | coming to pieces |
| distortion | an apparent warping or twisting, as of an image changed by an imperfection in a lens |
| galaxy | a group of stars held together by gravity, forming a distinct unit |
| Irregular | not having a regular form |
| luminosity | the amount of energy being given off by an object |
| magnitude | the actual brightness of a celestial object, such as a star |
| nebula | a cloud of dust and gas in space |
| optical | having to do with visible light and its study |
| parabolic | having to do with a special curve, which is described as the intersection of a plane with a cone |
| parallax | the apparent shift in an objects location based upon changes in one's position |
| spherical | having a round shape, such as the cross section of a sphere |
| asteroid | a rock that orbits the sun |
| chromosphere | the middle layer of the sun's atmosphere, considered to be the sun's surface |
| comet | an icy, gaseous object that orbits the sun |
| corona | the outermost layer of the sun's atmosphere, consisting of light gases |
| eclipse | the hiding of a heavenly body by another |
| fusion | a nuclear process in which light atoms combine to form heavier atoms, giving of energy |
| nucleus | the center of an object, especially an atom or an astronomical bocy |
| optimum | the very best possible; that which provides the greatest opportunity for success |
| photosphere | the innermost layer of the sun's atmosphere, which lies next to the core |
| portend | to indicate, as predictive of a future (usually undesirable) event |
| probe | a spacecraft designed to explore a region or object in space and send back regular reports |
| prominence | a tall stream of gas and flame that shoots out from the chromosphere of the sun |
| aphelion | the point at which an astronomical |
| eclipse | the hiding of an astronomical object by another |
| ellipse | an oblong spheroid such as a flattened oval |
| equinox | either of two times when the sun's rays strike the earth at the equator |
| lunar | having to do with the moon |
| maria | seas on the moon or Mars; the plural of mare |
| penumbre | an area of light shadow |
| perihelion | the point at which an astronomical object is at its closest point to the object it rotates around |
| phase | a form of the moon based on the way the light of the sun which strikes it is observed from earth |
| satellite | an object which orbits another |
| solstice | either of two points when the sun's rays strike the earth farthest from the equator |
| subsequent | something which follows another in time |
| tide | the rise and fall of the ocean based upon the pull of the sun or moon |
| umbra | an area of dark shadow |
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Hillerywest
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