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unit 3 SOLAR SYSTEM

THE SOLAR SYSTEM

TermDefinition
Solar system The sun and all of the planets and other bodies that travel around it.
heliocentric Sun-centered.
geocentric Describes something that uses Earth as the reference point.
parallax An apparent shift in the position of an object when viewed from different locations.
gravity A force of attraction between objects that is due to their masses.
orbit The path that a body follows as it travels around another body in space.
aphelion In the orbit of a planet or other body in the solar system, the point that Is farthest from the sun.
perihelion The point in the orbit of a planet at which the planets is closest to the sun.
centripetal force The inward force required to keep a particle or an object moving in a circular path.
Solar nebula A rotating cloud of gas and dust from which the sun and planets formed.
planetismol A small body from which a planet originated in the early stages of development of the solar system.
nuclear fusion The process by which nuclei of small atoms combine to form a new, more massive nucleus; the process releases energy.
sunspot A dark area of the photosphere of the sun that is cooler than the surrounding areas and that has a strong magnetic field.
solar flare An explosive release of energy that comes from the sun and that is associated with magnetic disturbances on the suns's surface.
prominence A loop of relatively cool, incandescent gas that extends above the photosphere and above the sun's edge as seen from Earth.
terrestrial planet One of the highly dense planets nearest to the sun; Mercury, Venus, Mars, and Earth.
astronomical unit The average distance between Earth and the sun; approximately 150 million kilometers symbol, AU
gas giant
Planetary ring
Dwarf planet
Kuiper belt
Kuiper belt object
Comet
Oort cloud
aseteroid
Meteoroid
Meteorite
Created by: user-1962309
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