The ocean floor is more dense than land because it has thousands of feet of water pressure pushing down on it. This compacts all the atoms and molecules that compose the sea floor making it more dense. It is common, however, to have low density magma flowing from the earths mantle through cracks in the ocean floor, causing sea floor spreading.
Click here to cancel reply.
Signup for an account and start participating in our site today!
You can also login with your Facebook or Twitter account
Don't have an account? Click Here to Signup
© Copyright GreenAnswers.com LLC