Chapter 8 Science

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Across
  1. 2. the study of the universe
  2. 4. a depression in the moons surface formed by the impact of objects from space
  3. 7. radiation that is left over from the beginning moments of the universe and is coming from all directions in space
  4. 8. the medium-sized spiral galaxy that is our home galaxy
  5. 11. a star such as the Sun and planets and other bodies that travel around it
  6. 15. the 180 degree line of longitude: going west across this line adds 1 day to the date and going east subtracts 1 day
  7. 16. any large, natural object that orbits a planet
  8. 19. a huge cloud of gas and dust in space that is the first stage of star formation
  9. 21. one complete spin of an object such as Earth on its axis
  10. 25. an exploded supergiant star
  11. 27. a rocky or metallic object that orbits the sun
  12. 28. the shape of the moon as seen in the night sky
  13. 30. a mass of billions of stars clustered together in a group
  14. 31. a meteoroid that enters Earth's atmosphere and burns with a streak of light
  15. 33. a vertical belt, about 15 degrees wide in longitude, in which all places have the same time
  16. 34. a band of colors made when light is broken up
Down
  1. 1. a situation that occurs when Earth, the sun, the moon are in a straight line and Earth's shadow falls across the moon
  2. 3. a blocking of the Sun's light that happens when Earth passes through the moons shadow
  3. 5. an object with gravity so strong that even light cannot escape from it
  4. 6. everything that exists, including Earth, the planets, and all of space
  5. 9. the force of attraction among all objects
  6. 10. a large body that orbits a star
  7. 12. a small, rocky object that orbits the sun in the inner and outer regions of the solar system
  8. 13. a group of stars that appears to form a pattern
  9. 14. the twice-daily rise and fall of water level along a shore, caused by the gravity of the moon and the sun
  10. 17. the tendency of a moving object to stay in motion at the same speed and in the same direction
  11. 18. any part of a meteoroid that reaches Earth's surface
  12. 20. a sphere of ice and rock that orbits the sun
  13. 22. a device that collects light and magnifies images to make distant objects appear closer and larger
  14. 23. the absorption lines that result in longer wavelengths from galaxies moving away from each other as space expands
  15. 24. the apparent shift in a object's position when viewed from two locations
  16. 26. one complete trip of an object orbiting another object such as Earth orbiting the sun
  17. 29. the distance that light travels in 1 year
  18. 32. a large, hot ball of gases, which is held together by gravity and gives off its own light