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Science Midterm

crystallization the process by which atoms are arranged to form a material with a crystal structure
barred spiral looks like a spiral galaxy with a bridge of stars connecting the arms.
parallax the apparent shift in the position of an object when viewed from 2 different places. uses background stars and position of earth.
Spitzer a telescope that collect radiation to create and image of the star
Chandra a telescope that collects x-Rays used to detect and study blackholes
frequency the number of waves that pass a point in given time
satellite any object that orbits another object
Oort cloud comet nursery that lives by Pluto, collection of baby comets
coma outer edges of comet nuclei that slush when heat is introduced
tail found when solar wind pushes coma away nuclei
nuclei frozen mass
comet dust, ice and rock following orbit
meteorites very rare occasion when meter hits earth's surface
asteroids rocky bodies between Mars & Jupiter - following orbit around the sun
light year the distance light travels in one year
astronomical unit the average distance between Earth and the sun
Greenhouse Effect ridiculously thick cloud cover, lets heat in but traps heat in, making it very hot
aurora colored lights at the poles where solar wind enters atmosphere
sunspot areas on the photosphere of the sun and surrounding area. suspected to tie to magnetic field, always in pairs. occur on 11 year cycle
solar flare column of plasma that escapes off the sun. found near sun spots
corona halo of light only visible during an eclipse. second layer of sun's atmosphere
photosphere visible surface of the sun
convection zone uses convection currents to carry heat/light
solar prominence loop of plasma that escapes from the surface of the sun
protostar baby star formed from whirlpools in nebula. once fusion starts, then it enters the main sequence.
H-R diagram uses a stars absolute magnitude and color to indicate where it is in it's life cycle
1/10 up to 10x the size of the sun medium size
over 100x the diameter of our sun supergiant
spectroscope takes star light and puts it through a prism to create a "special fingerprints" which is unique to the star
reflecting telescope uses curved mirrors to enlarge the image
meteoroids rock and metal bodies floating in space
laws of conservation of science matter cannot be created or destroyed, only change form
core site of nuclear fusion. hydrogen turns into helium
spiral stars arranged in a pinwheel fashion with empty space in the center
open clusters groups of stars with a loose disorganized appearance and contains no more then a few thousand stars.
radiation zone tightly packed are of the sun where particles are moving towards the surface
Created by: ndstudent