If it [earth's magenetic field] repolarizes, as you claim, why don't birds ever migrate NORTH for the winter? Also, magnets of a like polarity REPEL each other, so why don't animals that eat a lot of iron fly off into space? As to the magnetic field, this would pull the moon closer because the Moon has iron in it. Therefore, it's magnetic. The magnetic field 3 billion years ago would destroy ALL life forms, and a repolarization would send EVERYTHING into space.
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I didn't even catch that one (my specialty is dealing with bad math), but now that you mention it ...
Unbelievable. Just frelling unbelievable.may help them find their way, but that is just hypothesized, and we have not found any evidence to support this yet as far as I know.
Also, just because the polarity reverses doesn't mean that the magnetic strength changes one bit; nonmagnetized ferrous metals would feel just as much pull from a magnetic south pole as from a magnetic north pole.
And FYI, not only is the moon held in orbit by gravity (and momentum) rather than magnetism, but it has very little iron; it is mostly silicates and some light metals. Also, birds don't eat a lot of iron, and even if they did, it wouldn't be enough to affect them magnetically -- something you would know if your science education came from something more authoritative than Roadrunner cartoons.
~David D.G.
Wow.
You fail everything.
First, magnetism doesn't work this way,
Second: The magnetic field of the earth has a strength of 30-60 microteslas. Don't even think that this is strong enough to hurl anything into space, or even pull the moon closer.
Magnetism does not work that way. The little pink letter magnets on your fridge are more powerful than the Earth's magnetic field. They just happen to be far, far smaller. And the moon, crashing down because of magnetic influence? Firstly, look how far our satellite sits out from Earth itself. Solar wind has more influence on the Moon than Earth's geomagnetic field. Science has established the moon is wandering away. Very, very, VERY slowly; The sun will die out before the Moon actually escapes, barring outside intervention. Thankfully, you're right on one observation regarding the magnetic field of our little blue marble; It actually can counter gravity. If by "counter" we stretch the term to actually mean "measurable with a piece of laboratory grade vaccuum-gravitometer/magnetic flux metering kit and then only in the tiniest fluctuations". It makes finding oil and gas somewhat easier, at the least. No magic bird catapult, alas; The Earth really is a few billion years old, get over it.
Confused?
So were we! You can find all of this, and more, on Fundies Say the Darndest Things!
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