Earth Science Chapter 22

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Across
  1. 4. the nearest point of the moon’s orbit
  2. 5. one full rotation of the earth, the time from one local noon to the next
  3. 6. the apparent change in the shape of the moon
  4. 8. the time it takes the moon to complete one orbit of the earth
  5. 9. earth’s only natural satellite
  6. 11. the earth revolves around the sun once a year in an elliptical orbit
  7. 16. the amount of time it takes for the sun to complete one full cycle on the ecliptic
  8. 17. when one celestial body cuts of the light from the sun to another body
  9. 20. when the earth blocks the sun’s light that normally shines on the moon, making the moon appear a dull, coppery-red color
  10. 21. the ever-changing outer atmosphere of the sun
  11. 23. mounds of plasma rising from the surface of the sun
  12. 26. the visible surface of the sun
  13. 29. enormous pressure and density keeps particles from moving very much
  14. 30. occur when the sun’s rays are perpendicular to the earth’s Equator
  15. 33. occur when the earth’s axis leans directly toward to directly away from the sun
  16. 35. pressure and density is lower, allowing for many convection currents, bringing the sun’s nuclear energy to its surface
  17. 36. the largest mare on the surface of the moon
  18. 37. anything having to do with astronomical objects
  19. 39. cooler, small dark areas within the photosphere, typically have the same diameter of the earth
  20. 41. millions of round, shallow depressions on the moon
  21. 42. the lighted area of the moon is growing larger
  22. 43. streams of plasma that rise in loops from the chromosphere into the corona and back again, a spectacular display of solar fireworks
Down
  1. 1. referencing something to a star or constellation
  2. 2. the sun, moon, planets, and stars appear to be moving through the heavens as result of observing them from our location here on a moving rotating earth
  3. 3. the line between the light and dark sides of any astronomical body
  4. 7. a thin layer of the suns atmosphere, just above the photosphere
  5. 10. when the moon blocks some of the sun’s light from reaching the earth
  6. 12. an American mathematician whose calculations as a NASA employee were critical to the success of the first and subsequent U.S. crewed spaceflight
  7. 13. broad lowland plains of basaltic lava that ancient observers thought to be large lakes or seas
  8. 14. the lighted area of the moon is growing smaller Time and seasons
  9. 15. an extremely large mass of particles flowing out from the sun’s surface
  10. 18. where nuclear fusion takes place
  11. 19. a star, 109 times the diameter of Earth, largest source of energy for Earth
  12. 22. the earth rotates around its axis every 24 hours
  13. 24. the most distant point of the moon’s orbit
  14. 25. a direct result of earth’s motion around the sun
  15. 27. the line marking the apparent path of the sun against the background stars throughout the year as the earth moves around the sun
  16. 28. a process in which the nuclei of hydrogen atoms combine under intense heat and pressure to form the nuclei of helium atoms
  17. 31. a sudden energetic explosion of the sun’s matter that emits bursts of rays and particles
  18. 32. the distance from the earth to the sun, 150 million km
  19. 33. pointed masses of hot plasma
  20. 34. a synodic event involves the alignment or meeting of several bodies, such as the sun and moon
  21. 38. a flow of mostly protons, electrons, and small atomic nuclei from the sun
  22. 40. any natural or artificial object that orbits a planet; natural satellites are called moons