Chapter 7&8

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Across
  1. 5. Most commonly seen in classrooms, have become extremely accurate due to technology.
  2. 7. Where is the saltiest sea?
  3. 9. When the Earth first formed, what was the earth like?
  4. 10. How are the ocean depths measured?
  5. 12. What is the warmest ocean basin?
  6. 14. Why stars winkle?
  7. 15. Earth belongs to what galaxy?
  8. 17. Earth’s iron core creates a magnetic field which protects the planet from ____
  9. 18. Who first proved that all of the Earth’s oceans were connected (in 1519)?
  10. 20. Was the moon closer or farther when the Earth was younger?
  11. 21. What were the first organisms on Earth and when did they appear?
  12. 24. What is the name of the very small early planets, which formed through gravitational attraction reaching sizes of a few miles to eventually the size of our moon?
  13. 26. What is the name of the ancient supercontinent?
  14. 27. Which civilization thought that a river ran around the edge of the world?
  15. 28. What is the smallest ocean basin?
  16. 29. Looks similar to wedges by dividing the area into equal sections.
  17. 30. Where are the deepest points on Earth?
Down
  1. 1. What are the smallest type of organisms found in the oceans?
  2. 2. What is the second largest ocean basin?
  3. 3. What type of object can give us information about the conditions in which the solid planets like (earth) formed?
  4. 4. What is the name of the line drawn close to the 180-degree meridian that separates that separates neighbors by 24hrs?
  5. 6. What special kind of water do scientists look at in the ocean and in the comets to see if the proportions match?
  6. 8. Distorts the continents little as possible by not slicing into them.
  7. 11. What planet is believed to have once had a magnetic field that disappeared when the planet’s iron core cooled?
  8. 13. what are scientist able to calculate from the radioactive elements found in a meteorite that decay at a particular rate?
  9. 16. Most accurate representation of the features of the earth.
  10. 19. Which color travels the deepest in the ocean?
  11. 22. What area of the Atlantic is notorious for having strange things to occur and instruments to malfunction?
  12. 23. What is the largest ocean basin?
  13. 25. What name did scientist give to the Earth when the outer surface was completely molten?