Astronomy Vocab

123456789101112131415161718192021222324
Across
  1. 2. the process of burning something
  2. 3. process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink
  3. 6. the scientific study of the universe; it includes the observation and interpretation of celestial bodies and phenomena
  4. 9. the center of mass of two or more bodies orbiting around each other
  5. 12. process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high energy carbohydrates such as sugars and starches
  6. 14. a large cloud of dust and gas in space
  7. 15. the direct transfer of heat from one substance to another substance that it is touching
  8. 18. the transfer of energy by electromagnetic waves
  9. 21. the complete range of electromagnetic waves placed in order of increasing frequency
  10. 23. the process in which smaller nuclei merge together into a single larger nucleus, this process powers the sun
  11. 24. shortwave radiation emitted by the sun; most UV rays are blocked by the ozone layer in the upper atmosphere
Down
  1. 1. planets made primarily out of gas,also known as "gas giants", includes Jupiter, Saturn, uranus and, neptune
  2. 4. a stream of electrically charged particles produced by the suns corona deflected by earths magnetic field
  3. 5. incoming solar radiation
  4. 6. the point in a planets orbit in which it is furthest from the sun. also when the planet travels slowest
  5. 7. the point in a planet orbits in which it is closest to the sun. also when the planet travels fastest
  6. 8. the two times of the year on which neither hemisphere is tilted toward or away from the sun; day and night are equal lengths in both hemispheres
  7. 10. the motion of a body, such as a planet or moon, along a path around some point in space. it takes 365.25 days for the earth to complete a full revolution around the sun
  8. 11. the turning, or spinning, of a body on its axis. takes 24 hours for the earth to complete a full rotation
  9. 13. a slow motion of Earth's axis that traces out a cone cover a period of 26,000 years
  10. 16. either of the two times in the year; the summer solstice and the winter solstice, in which the N or S hemispheres experience their longest or shortest days due to the orientation of the tilt
  11. 17. the process by which a large nucleus is split into smaller nuclei, this process powers nuclear power plants and bombs
  12. 19. a tide just after a first or third quarter moon, when there is the least difference between high and low water
  13. 20. a tide just after a new or full moon, when there is the greatest difference between high and low water
  14. 22. the wobbling of earths axis, changing the Earth's tilt by 0.5 degrees every 18 years