Fonts 17 2 questions describe the topography of the seafloor.
Why is sea floor spreading like a conveyor belt.
New ocean floor forms along cracks in the ocean crust as molten material erupts from the mantle spreading out and pushing older rocks to the sides of the crack.
It has to do with plate tectonics.
At ocean ridges are the longest mountain chains on earth s surface.
S concept of sea floor spreading at mid ocean ridges.
It is like a conveyor belt because the two plates are pushing apart from each other like a conveyor belt divergence.
As a result the ocean floors move like conveyor belts carrying the continents.
As a result the ocean floors move like conveyor belts carrying the continents along with them.
There s a plate boundary under the middle of the ocean and the two plates are moving away from each other.
In sea floor spreading the sea floor spreads apart along both sides of a mid ocean ridge as new crust is added.
So if you took samples from the sea floor the further from this boundary you are the older the rock is.
New magma is being brought up from below the crust to continuously fill the crack.
Why is the hypothesis of seafloor spreading like a conveyor belt.
Explain how ocean floor rocks and sediments provided evidence of seafloor spreading it has deep trenches and high ridges.
They envisaged a conveyor belt model where new ocean crust formed at the ridge is imprinted with the prevailing magnetic field at the time and moves outwards as it gets older.
In sea floor spreading the sea floor spreads apart along both sides of a mid ocean ridge as new crust is added.