Those moving rocks at Racetrack Playa in Death Valley, California, USA
2007-07-03 10:23:37
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answer #1
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answered by Wayne B 4
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None of the above answerers have any idea what they're talking about. It is well known what causes the Aurora Borealis... as charged particles stream into the earth's two poles because of the magnetic force imparted on them, they collide with molecules in the atmosphere and give off light. Iceland is where it is because it sits on the boundary between two tectonic plates, it is NOT a hot spot. There just happens to be enough hot, upwelling material in that part of the mantle to fuel enough volcanism to produce an island. And the polarity of the earth's magnetic field shifts because off fluid dynamics... the earth's core is a molten alloy of iron and nickel with lots of convection currents and instabilities. Over time, things will occasionally flip around and cause the poles to switch. You can't predict with any certainty when it will happen, but that doesn't mean we don't know of anything about what causes it.
Here are a few ideas for you:
1) Geodes are hollow cavities that get partially or completely filled in by crystallizing minerals. Although some questions can be answered, the process by which these cavities form and eventually result in geodes is not fully understood.
2) Ball lightning is a well documented phenomenon that has no current plausible explanation.
3) Drumlins are large, oblong shaped mounds that are left behind by glaciers. Very little is known about how drumlins form. There are many competing theories, but none have gained wide acceptance.
2007-07-03 15:51:20
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answer #2
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answered by mnrlboy 5
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What causes the polarity of the Earth to shift. There is records of this shift in the rocks. It is in part how they figured out plate tectonics. There are also some theories on the subject, but no one knows really why and how it works.
Of course, Global Warming isn't a clear one either. We know some of the causes of our heating cycles. But by and large, there is no clear picture on a number of things. You can usually find some contradictory evidence everywhere that you turn on this issue (like why it cooled from the 40's to the 70's as industrialization and carbon dioxide emissions increased).
2007-07-03 03:31:01
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answer #3
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answered by An S 4
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Why is Iceland where it is? The entire mid-oceanic ridge is underwater. The only exception to this is the island of Iceland. Here, the mid-oceanic ridge rises above water. Is this due to a hot spot? Probably not, because hot spots typically move (look at the Hawaiian Island chain or the Deccan Traps to the Maldive Islands hot spots). Maybe it is due to warping as Greenland is rifting from the North American Craton. I have never heard a good explanation why Iceland is there.
2007-07-03 03:18:10
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answer #4
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answered by Amphibolite 7
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Aurora borialias (<-- not spelled right???) also called the northern lights. Lots of theory but people still not sure. I dont know how geological that is but it can only be seen in certant parts of the world like Alaska and dark parts of the northern hemesphere
2007-07-02 21:17:43
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answer #5
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answered by Peepz 2
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honestly not Bruce. Jesus demands Obedience to his Commandments. The Commandments are a transcript of God's character. God is the author of his Holy regulation(Exodus 31:18). His regulation is a Revelation of God's will to mankind. to swap the regulation may be similar to changing God. The Bible says "i'm the Lord thy God, i alter not." God Holy regulation is immutable. guy does not have the skill to swap God's words in any way. we are obligated with the aid of God to maintain his Commandments. The regulation of God is Holy, purely and robust(Romans 7:12). The regulation of God is the two everlasting and correctly-known and it rather is been favourite continuously(Romans 3:31). Jesus pronounced that he did not come to wreck the regulation(Matthew 5:17-18). Jesus magnified the regulation. He raised the intense ethical standard of the regulation while he lived between men. people who get carry of Christ into their coronary heart and shop his Commandments will stay continuously while Christ returns the 2d time. particular observe: a million John 2:4 a million John 5:3 Revelation 12:17 Revelation 14:12 Revelation 22:14
2016-09-28 23:40:20
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answer #6
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answered by ? 4
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