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22 Vocab Bruce

Earth science vocab

TermDefinition
Fusion the process or result of joining two or more things together to form a single entity
Convection the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat
Corona the rarefied gaseous envelope of the sun and other stars. The sun's corona is normally visible only during a total solar eclipse when it is seen as an irregularly shaped pearly glow surrounding the darkened disk of the moon
Sunspot a spot or patch appearing from time to time on the sun's surface, appearing dark by contrast with its surroundings
Solar Wind the continuous flow of charged particles from the sun that permeates the solar system
Light Year a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles)
Parallax the effect whereby the position or direction of an object appears to differ when viewed from different positions
Nebula a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter
Main sequence a series of star types to which most stars belong, represented on a Hertzsprung–Russell diagram as a continuous band extending from the upper left (hot, bright stars) to the lower right (cool, dim stars)
Neutron Star a celestial object of very small radius (typically 18 miles/30 km) and very high density, composed predominantly of closely packed neutrons
Black Hole a region of space having a gravitational field so intense that no matter or radiation can escape
Doppler Effect an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other
Created by: beastbob
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