Sea Floor Spreading

What is sea floor spreading?

-. Sea-floor spreading is the process in which the ocean floor is extended when two plates move apart.

What are some of the major land forms that are created from plate movement?

-. The continents, trenches, ocean mountain? -_-;;;

How were the Mariana Islands formed?

-. By the major movements of volcanoes and the plates.

What evidence exists today that the plates are still moving and that the islands are ancient volcanoes?

-. The earthquake is the answers. Everytime the plates move an earthquake happens.

What is an atoll?

-. An atoll is an island of coral that encircles a lagoon partially or completely.

Why are atolls mainly found on the Pacific?

-. Because there are high level of volcanic activities going around the whole pacific.

-PS- How do you make the model? -_-;; i don't get it...=_=..

Someone Please Help?...