Unit 1: Solar System Vocabulary

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Across
  1. 2. Technology that allows scientists to make detailed observations of space.
  2. 7. A large, rocky object that orbits the Sun.
  3. 10. An icy object that orbits the Sun and forms a tail when it gets close to the Sun.
  4. 12. An attraction force that pulls objects toward one another.
  5. 13. Terrestrial planets generally have (more or less) moons because they have less mass.
  6. 16. A model of the solar system with the Sun at the center.
  7. 17. Meteors burn up in Earth's __________.
  8. 19. Space Probes & Satellites collect ____ from space.
Down
  1. 1. Gravity pulled gas and ____ together to form the Sun and planets.
  2. 3. A satellite is an object that _______ another object.
  3. 4. An object that orbits the Sun, is round, but has other objects within its orbit; _____ planet.
  4. 5. Mathematical models use patterns and calculations to explain ______ motion.
  5. 6. More mass = ________ gravity.
  6. 8. Terrestrial planets mean they are made of ____.
  7. 9. Computer simulations _______ evidence and test explanations.
  8. 11. A small rocky object that produces a bright streak of light when it enters Earth's atmosphere.
  9. 14. Gas giants generally have (more or less) moons because they have more mass.
  10. 15. A model of the solar system with Earth at the center.
  11. 18. Comets form a ____ when near the Sun.