Unit 6 - Our Solar System and Beyond

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Across
  1. 3. A galaxy that is circular or football in shape and looks like a frisbee or a disk. Contains mostly older stars.
  2. 4. The largest stars that give off the most energy or brightness.
  3. 6. None of the moon is visible
  4. 7. A galaxy that has arms that extend outward and spiral around from a main central area. Contains a lot of dust and gas and a mix of old and young stars.
  5. 11. The part of the lunar cycle when the moon appears to grow.
  6. 13. Twice a year when day and night are of equal length, occur on the first day of spring and autumn
  7. 16. A round rocky or gaseous object that orbits a sun (star)
  8. 19. Half of a sphere, like the Earth.
  9. 20. To orbit around an object, like the sun.
  10. 21. A rocky object that orbits a planet or dwarf planet
  11. 22. Allow for the transfer of energy in an up and down motion
  12. 24. 100% of the moon is visible
  13. 25. A small space rock that is moving through the solar system that has often broken off from an asteroid.
  14. 27. A galaxy with an unusual shape that does not fall into the elliptical or spiral categories.
  15. 29. A group of galaxies clustered or grouped together
  16. 31. A moon where more than half is visible.
  17. 32. Luminosity or brightness. Absolute magnitude is the actual brightness, Relative magnitude is the brightness compared to another star or due to a difference in distance.
  18. 33. A giant ball of burning gases that give off heat and light
  19. 36. To circle or revolve around
  20. 39. Half of the moon is visible
  21. 41. The attractive force, or pull, between object that have mass.
  22. 43. Energy transmitted in waves
  23. 45. A star that has collapsed under its own gravity after a super nova. The end of a massive star’s life cycle.
  24. 47. One complete trip around an object, like the sun.
  25. 48. The Earth is tilted on its axis at 23.5 degrees
  26. 49. One complete circle on an axis.
Down
  1. 1. A tide where the Earth, Moon and Sun form a 90-degree angle. These tides are less extreme than normal.
  2. 2. A large explosion that occurs when a massive star collapses upon itself as it ages.
  3. 4. A tide where the Earth, Moon and Sun are in a straight line. Due to additional gravity from the sun, the tides are more extreme than normal.
  4. 5. An area in space in which gravity’s pull is so strong that nothing can escape, not even light. Created when the most massive stars explode in a supernova. The end of the most massive star’s life cycle.
  5. 8. To spin on an axis
  6. 9. The distance from crest to crest (top of wave) or trough to trough (bottom of wave)
  7. 10. The number of waves that passes in a given time.
  8. 11. A type of star that has a high surface temperature but gives off less energy/has less luminosity than most other types of stars. The end of a small to medium mass star’s life cycle.
  9. 12. A large, irregularly shaped object made of rock that orbits our sun. Most exist in an asteroid belt in between Mars and Jupiter.
  10. 14. A moon where less than half is visible
  11. 15. A meteoroid that enters the Earth’s atmosphere
  12. 17. A large mass of dust and gas that will eventually pull together to form a star
  13. 18. The longest and shortest day that occur on the first day of winter and first day of summer.
  14. 23. Straight line through the center of an object
  15. 26. The horizonal circle around the middle of the Earth that divides it into two halves.
  16. 28. A type of star that is much larger and gives off more energy than an average sized star. Red giants have a lower surface temperature than blue giants.
  17. 30. The phenomenon where an object appears red as it moves away due to the stretching of light waves.
  18. 34. Brightness
  19. 35. The part of the lunar cycle when the moon appears to shrink
  20. 37. The theory that the universe began as a singularity that exploded and sent space, time and matter outward.
  21. 38. All of outer space and the matter and objects within in
  22. 40. An adult star in the longest part of its life cycle; tends to have a higher surface temperature as the star gets brighter.
  23. 42. A system of stars, dust and gas held together by gravity, often in a specific shape.
  24. 44. A star that has plants revolving around it.
  25. 46. A small, icy object made of ice and dust that has a long “tail” of gas. Comets have highly elliptical orbits around a sun.