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Sea-Floor Spreading |
| edHelper's suggested reading level: | high interest, readability grades 5 to 7 | |
| Flesch-Kincaid grade level: | 5.75 |
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Sea-Floor Spreading
By Patti Hutchison |
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1 In 1910, Alfred Wegener proposed the theory of continental drift. He believed that the continents were drifting apart. He found evidence to prove his theory. But he could not answer one question. How were the continents moving? He thought they were plowing through the ocean crust. Other scientists knew this could not happen.