What is continental drift theory?

Question

i'm sorry i dont have any idea about that!?

so please kindly help me!?

Answer 1

In 1915, Alfred Wagner began noticing that coastlines (Like South America and Africa) lined up perfectly.  Even things like mountain belts and fossil records lined up. He said that everything was one continent at one point. (here, he was correct) He said they spread apart only on the surface, the continents sort of cutting through the ocean floor. (here, he was wrong)  We know (sort of) now that everything is moving, not just continental land. (that would be the plate tectonics theory)

Answer 2

the outer crust of the earth (the part where we live), is much like a cracked eggshell, and along those cracks and weak spots in the crust, either the earth is trying to fill in those cracks, or they serve as a mechanism for subduction, that is where one part goes under the other, and with the intense pressure and heat to which it is then exposed to in the upper mantle, dissolves the mass of rock structure.

the subduction mechanism allows the other part of the crack to fill in with new rock material, and as it fills in, it moves the whole plate gradually towards the subduction zone.  any landmass on that section of the earth also moves on it, like a boat in open water.

There can be changes in direction of drift, active cracks and fills, changing subduction zones, and more, that according to academia, gradually causes continents to slowly change position and climate.

However, if you read Velivskovsky, continental drift can happen a whole lot faster that what the party line says, and drastic and rapid changes can happen in ways the college geologists refuse to recognize.

Answer 3

its says that pangea broke apart into todays 7 countinent... and are still moving apart...

Answer 4

Alfred Wegener proposed the theory of continental drift.  This theory proposes that all of the land masses of the Earth used to be gathered together in one super continent.

Through processes that Wegener could not explain at the time, this continent broke into several "plates of continental crust".  He proposed that parts of the Earth's crust were slowly drifting atop a liquid core.

Wegener collected quite a bit of supporting evidence for this theory.  Unfortunately, none of his peers accepted his theory.  This was due mainly to the fact that Wegener could not offer an adequate explanation for the force that moved the plates.

It was not until the 1960's that technology advanced enough to enable exploration of the sea floor.  It was then that the phenomenon of sea floor spreading was discovered.  This was the evidence that Wegener needed.  Unfortunately, it came after his death.

To read about the supporting evidence that Wegener gathered, go to:

http://kids.earth.nasa.gov/archive/panga...

Answer 5

Originally, millions and millions of years ago, the Earth was mostly water with just one giant land mass called Pangea.  Over the millenia, due to earthquakes and other seismic activity, Pangea began to separate into "continents" and the tectonic plates drifted into where they are now.

If you look at the eastern horn of South America, you'll see that it fits rather nicely into the western coast of Africa.  The same can be said for Australia and the countries that surround the Indian Ocean.

So, in a nutshell, continental drift theory states that at one time, the Earth was a continuous land mass that broke up into the continents that we have today.