Chapter 8 Review

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