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Q4 VOCAULARY

TermDefinition
Lightyear is the distance that light travels in one year
Astronomical unit equal the average distance measure from the center of the sun to the center of the earth
universe as all of space and everything in it
galaxy is a huge groups of single stars, star system , star cluster , dust and gas bound together by gravity
celestial object a natural occurring physical entity
star is a giant ball of super heated gas , or plasma composed of hydrogen and helium
planet is round, orbits the sun and has cleaned out the region of solar system along its orbit
dwarf planets is an object that orbits the sun and have enough gravity to be spherical but it has no cleaned the are of its orbit
moon a natural satellite in a celestial body in orbit
asteroids are small, mostly rocky bodies , many of which are found in the area between mars and jupiter
comet are loos balls of ice and rocks
telescope are instrument that collects and focus light
spectra the color re , orange , yellow, green , blue ,indigo and violet
wave length the distance between the crest of one wave and the next wave
h-r diagram classify stars and how they change over time
big bang theory state how the universe form
absolute magnitude is the brightness star would have if were at a standard distance of earth
apparent magnitude the brightness as seen from earth
sun is a gaseous body
sunspot area of plasma that are cooler that the plasma around it
solar flare eruptions cause of the temperature of the sun
prominence different part of sunspot
corona this layer extend in space for millions of kilometers
photosphere the inner layer of the sun
chromosphere the middle layer of the sun
radioactive zone the interior of the sun
convective zone the inner layer of the sun
core the inner layer of the sun
rotation the spinning of the earth
revolution the movement of an object around other
Created by: user-1819768
Popular Earth Science sets

 

 



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