Solar System

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Across
  1. 3. icy bodies that orbit the Sun.
  2. 5. the force of attraction between all objects in the universe.
  3. 7. an oval.
  4. 9. system a star and the objects that orbit it.
  5. 11. dust, small asteroids, comets, or moons.
  6. 14. belt a belt that orbits the sun outside of the solar system.
  7. 15. meteors that reach the ground; comprised of rock, iron, and nickel.
  8. 17. the layers of gasses surrounding a planet, moon, or sun.
  9. 19. belt a group of asteroids that orbit the sun.
Down
  1. 1. an object orbiting a star that is round, not itself a star, and large enough to have cleared the orbital path of small space objects.
  2. 2. rocky bodies orbiting the Sun.
  3. 4. cloud a collection of comets that surround the solar system in a spherical shape.
  4. 6. giants the 2 outermost planets; large planets comprised primarily of frozen gasses.
  5. 8. the path of one body around another body, such as the path of Earth around the Sun or the Moon around the Earth, or stars around the galactic center.
  6. 10. giant 5th and 6th planets from the sun; large planets composed mainly of gas.
  7. 12. visible part of the atmosphere of gas giants is considered part of the planet itself.
  8. 13. planet any of the four planets farthest from the Sun (Jupiter, Saturn, Uranus, and Neptune).
  9. 16. planet any of the four planets closest to the Sun (Mercury, Venus, Earth, and Mars). Also called “terrestrial planet.”
  10. 18. a space object that enters the Earth’s atmosphere and usually burns up before reaching the ground.