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Please note!

    Listed below are questions submitted by e-mail to the author of "The Great Magnet, the Earth." Some of them (marked ***) came in response to an earlier site "The Exploration of the Earth's Magnetosphere" and are also found there in the question-and-answer section. Only some of the questions that arrive are listed, either because they keep coming up again and again--on the reversal of the Earth's magnetic field, for instance--or because the answers add extra details, which might interest other users.

Index of Questions arranged by Subject


Items covered:

  1. What is "Magnetic Flux" and what are "Flux Lines"?
  2. Is the surface of the Earth expanding?
  3. Will a Compass work inside a Car?
  4. Pole shifts? What Pole Shifts?
  5. What was it that Ned Benton did?
  6. Reversals of the Earth's field (4 queries)
  7. Can Magnetism propel Spaceships?
  8. Reversal of the Sun's Magnetic Poles
  9. Measuring Earth's magnetic field
  10. The strength of the Earth's mgnetic field
  11. Magnetic Shielding
  12. Building an electromagnet
  13. How do Magnetic Reversals affect Animal Migrations?
  14. Which is the "True" North Magnetic Pole?
  15. Magnetic intensity at Singapore
  16. Inner Core Rotation
  17. How does the Earth's field vary with location?
  18. Effect of magnetism on water

  19. "Why does this happen?" (electromagnetic induction)
  20. What would a Compass on the Moon point to?
  21. Why do iron filings outline magnetic field lines?
  22. Is Earth held in its orbit by magnetic forces?
  23. All magnetism due to different arrangements of magnetic poles?
  24. Magnetism to replace gravity in a space station?
  25. Magnetic reversal due soon? And are volcanoes a factor?
  26. Can magnetic reversals affect the human mind?
  27. When and where can I see "Northern Lights"?
  28. Magnetic reversals due to comet impact?

  29. Space Radiation and our weakening magnetic field
  30. Can the Sun trigger magnetic reversals?
  31. What is the smallest magnet?
  32. Isn't the Sun too hot to be magnetic?
    magnQ&A3.htm a>
  33. The movie "The Core"
  34. Can we tell if a symmetric magnetic field rotates around its axis?
  35. What causes permanent magnetism?
  36. What types of metal are attracted to magnets?
  37. "If the earth is a giant magnet, why doesn't all iron stick to it?"
  38. Risks from stormy "Space Weather"
  39. Does our magnetic field stop the atmosphere from getting blown away?
  40. Dynamos triggered by the sun?
  41. Could generated electricity affect Earth's magnetic field?
  42. "Magneto-therapy"
  43. Curie Point
  44. Blocking of magnetic fields
  45. Earth magnetism from rotating electric charges?
  46. Teacher seeks easy experiments

If you have a relevant question of your own, you can send it to
earthmag("at" symbol)phy6.org
Before you do, though, please read the instructions




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    Author and Curator:   Dr. David P. Stern
         Mail to Dr.Stern:   earthmag("at" symbol)phy6.org .
    Last updated 15 December 2004