What are the theories of the origin of Earth?

Question

please answer......thanks...^_-

Answer 1

The two primary theories are called "hot accretion" and "cold accretion".  Look in any geology 101 book and they will be explained to you.

Answer 2

dmx is great

Answer 3

Creationism and Evolution.

Answer 4

Look it up on Google, why make us do it for you instead?

Answer 5

go on google

Answer 6

Scientific:  Big Bang and Second or Third generation of star dust whirling until Solar System formed.

Christian:  God made everything in 7 days.

Answer 7

search at wikipedia

Answer 8

>___________eWaN____________<

Answer 9

The theories start around 15 milliard year ago. On that time not was material, only a big energy. That high energy start to making some material. This material on the las few milliard years start making bigger and bigger conglomeratum. Now this conglomeratum differented by weight. ( Newton, Kepler )

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Gyula

Answer 10

According to the theory of continental drift, the world was made up of a single continent through most of geologic time. That continent eventually separated and drifted apart, forming into the seven continents we have today. The first comprehensive theory of continental drift was suggested by the German meteorologist Alfred Wegener in 1912. The hypothesis asserts that the continents consist of lighter rocks that rest on heavier crustal material—similar to the manner in which icebergs float on water. Wegener contended that the relative positions of the continents are not rigidly fixed but are slowly moving—at a rate of about one yard per century.

According to the generally accepted plate-tectonics theory, scientists believe that Earth's surface is broken into a number of shifting slabs or plates, which average about 50 miles in thickness. These plates move relative to one another above a hotter, deeper, more mobile zone at average rates as great as a few inches per year. Most of the world's active volcanoes are located along or near the boundaries between shifting plates and are called plate-boundary volcanoes.

The peripheral areas of the Pacific Ocean Basin, containing the boundaries of several plates, are dotted with many active volcanoes that form the so-called Ring of Fire. The Ring provides excellent examples of plate-boundary volcanoes, including Mount St. Helens.

However, some active volcanoes are not associated with plate boundaries, and many of these so-called intra-plate volcanoes form roughly linear chains in the interior of some oceanic plates. The Hawaiian Islands provide perhaps the best example of an intra-plate volcanic chain, developed by the northwest-moving Pacific plate passing over an inferred “hot spot” that initiates the magma-generation and volcano-formation process.

Plate-Tectonics Theory—The Lithosphere Plates of Earth

This figure shows the boundaries of lithosphere plates that are active at present. The double lines indicate zones of spreading from which plates are moving apart. The lines with barbs show zones of underthrusting (subduction), where one plate is sliding beneath another. The barbs on the lines indicate the overriding plate. The single line defines a strike-slip fault along which plates are sliding horizontally past one another. The stippled areas indicate a part of a continent, exclusive of that along a plate boundary, which is undergoing active extensional, compressional, or strike-slip faulting.