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15 Cards in this Set

  • Front
  • Back
photosphere
the layer of the sun that gives off light
corona
the sun’s atmosphere
sunspot
a darkspot on the sun; an area which is cooler than the rest of the photosphere
solar flare
a brief burst of energy from the sun’s photosphere
solar wind
a fast-moving stream of particles thrown into space by a solar flare
solar system
a group of objects in space that move around a central star
planet
a large object that moves around a star
asteroids
small objects made up of rock and dust that move around the sun
comet
a small mass of dust and ice that orbits the sun in a long, oval-shaped path
orbit
the path one body in space takes as it revolves around another body
fusion
join together
Universal Law of
Gravitation
all objects in the universe are attracted to all other objects
moon
another name for a natural satellite that is round, rocky and cratered
elliptical
the “egg shaped” path
mass
the amount of matter in an object