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chapter 3 lesson 2-6

QuestionAnswer
solar system the system consisting of the sun and the planets and other objecte that revolv aroun it
astronomical unit a unit of distance equal to the average distance between earth and the sun
planet an object that orbits a star is large enough to b rounded by its own gravity
dwarf planet an object that orbits the sun and is spherical
planetesimal one of the small asteroid like bodies that formed the building blocks of the planet
core the central region of the sun
nuclear fusion the process in which 2 atoms nuclei combine to form a large nucleus
radiation zone a region of very tightly packed gas in the suns interior
convention zone the outermost layer of the sun
photosphere the inner layer of suns atmosphere
chromosphere the middel layer of the sun
corona the outer layer of the sun
solar wind a stream of electrically particles that enternats from the suns corona
sunspot a dark area of gas on the suns surface
prominence a big redihs loop of gas
solar flare a eruption of gas from the suns surface that occurs when the loop in in sun spot.
terrestrial planet the name ofen given to the 4 iner planets
greenhouse effect the trapping of heat near a planets surface
gas giant it is a name given to planets like Jupiter Saturn Uranus and Neptune
ring a thin disk of small ice and rock
asteroid belt the region of the solar system the orbits of mars and Jupiter where lots of astrod are found
kuiper belt a regon of an objet orbet the sun
oort cloud a spherical region of comets
comet a loose collection of ice and dust
coma a fuzzy outer layer of comet
nucleus the soled iner core of a comet
asteroid 1 of the rocky objects revolving around the sun
meteoroid a chunk of rock or dust in space
meteor a streak of light in the sky
meteorite a meteoroid that pases through earths atmosphere
Created by: user-1975225
 

 



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