The magnetic field of the Earth serves a useful purpose in deflecting Solar radiation. Without the magnetic field there is much more charged-particle radiation striking the surface. The auroras would occur everywhere instead of at the magnetic poles. Compass needles wouldn't work, and then they would flip direction. The magnetic field IS DECREASING and could go to zero and reverse sometime in the next few tens-of-thousands of years. It may be overdue for a flip. See: http://www.pbs.org/wgbh/nova/magnetic/timeline.html
This is all to do with the Doomsday scenario of the Mayan calender ending in 2012. The North and South Magnetic Poles have changed many times in the Earths history, and life is still around.
Now, for the Geographic North and South Poles to switch it would mean that something very catastrophic has happened, and to be frank, I doubt if very many, if any Human Beings would be around to worry about it.
There are two "north poles" - the magnetic north pole, and the geographic north pole. The geographic north pole is defined by Earth's rotation - that one wouldn't change. The magnetic north pole (which is close to the geographic south pole) is defined by magnetism; that one would indeed change, if the magnetic field changes.
Research shows that the North and South poles polarity may, indeed switch every couple of thousand years. This normally results in a weakened atmosphere for the time it takes to swap.
the north and south magnetic poles can shift
They wander around a bit, yes.
in counter-clock wise direction
counter-clockwise. All the the objects in the solar system orbit in that direction and almost all of them rotate in that direction. This due to the conservation of angular momentum.
Counter-clockwise, as viewed from the north star. It moves to the direction from west to east
Angular momentum is conserved. The energy of Earth's rotation will keep it rotating in the same direction, unless a truly enormous amount of energy were to be used to alter that rotation.
No.
Once an object, any object, such as the Earth, is set in motion to rotate in a particular direction, it will always continue to rotate in that direction. For the Earth to rotate in another direction would take an enormous, cataclysmic force that would have to be created by a gigantic object colliding with it, or at least coming very close to it.
The Coriolis effect is caused by the Earth's roration.
same as earth
west to east
no
Clockwise .
The earth only rotates in one direction. It rotates clockwise.
When looking from the north of earth it seems to rotate counter-clockwise.
in counter-clock wise direction
All planets in the solar system rotate, but not all in the same direction, Mercury, Earth, Mars, Jupiter, Saturn, and Neptune all rotate in one direction, while Venus, Uranus, and the dwarf planet Pluto rotate in the opposite direction.
counter-clockwise. All the the objects in the solar system orbit in that direction and almost all of them rotate in that direction. This due to the conservation of angular momentum.
You may be referring to the Doppler effect. I suggest to look up "Doppler Effect" in the Wikipedia; but briefly, waves get "compressed" in the forward direction, and "elongated" in the opposite direction.