Physics Chapter 11

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Across
  1. 2. Year - A unit of distance used to measure how far light travels in a year (9 letters)
  2. 4. - The curved path of a celestial object around another due to gravity (5 letters)
  3. 6. Bang - The theory describing the universe’s explosive beginning (7 letters)
  4. 9. Planets - Mercury, Venus, Earth, and Mars are collectively called this (12 letters)
  5. 10. - The explosive death of a massive star (10 letters)
  6. 11. Shift - The observed increase in wavelength of light from objects moving away (8 letters)
  7. 13. - Natural satellites that orbit planets (5 letters)
  8. 16. Giants - Large planets like Jupiter and Saturn, mostly made of hydrogen and helium (9 letters)
  9. 17. System - The Sun and all objects bound to it by gravity (11 letters)
  10. 18. - Icy bodies that develop tails when near the Sun (6 letters)
  11. 19. - Small rocky bodies mostly found in a belt between Mars and Jupiter (9 letters)
Down
  1. 1. - Large celestial bodies that orbit a star (7 letters)
  2. 3. - Massive systems of stars, dust, and gas bound by gravity (8 letters)
  3. 5. - Often called “shooting stars,” these burn up in Earth’s atmosphere (7 letters)
  4. 7. - The force of attraction between two masses (7 letters)
  5. 8. - Space rocks that survive the atmosphere and land on Earth (10 letters)
  6. 12. Effect - The change in frequency or wavelength of a wave relative to an observer
  7. 14. Planets - The gas giants and ice giants in the Solar System (12 letters)
  8. 15. - The shape of most planetary orbits (7 letters)
  9. 17. - Objects, natural or artificial, that orbit a planet (10 letters)