Unit 4 - The Solar System

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Across
  1. 4. The study of celestial objects, space; physical universe as a whole.
  2. 6. The four planets beyond Mars: Jupiter, Saturn, Uranus, and Neptune.
  3. 9. One complete spin on the axis.
  4. 10. a group of many rock objects located roughly between the orbits of the planets Mars and Jupiter
  5. 12. A natural or artificial object in space that circles around another object.
  6. 13. The Sun and everything that moves around it.
  7. 16. The tendency of a moving object to keep moving in a straight line or any object to resist a change in motion.
  8. 17. Any of the patterns that are formed by a group of stars in the night sky.
Down
  1. 1. The force of attraction between any two objects due to their mass.
  2. 2. The four planets closest to the sun: Mercury, Venus, Earth, and Mars.
  3. 3. An object in space that produces its own energy, including heat and light.
  4. 5. A celestial body that orbits around the sun.
  5. 7. the brightness of a star perceived by an observer on Earth.
  6. 8. A chart or map showing the relative apparent positions of the stars, as seen from the earth, in a particular area of the sky.
  7. 11. An astronomy tool designed to make distant objects appear nearer and larger, using lenses and curved mirrors. (i.e. Galileo)
  8. 14. The star at the center of our solar system that supplies heat and light to Earth; its enormous gravity keeps the solar system in orbit
  9. 15. The path one object travels around another object.