Hess said that magma rises to the surface. As the magma tries to escape it causes the

seafloor to spread and make room for it. When the magma escapes it flows to the sides of the seafloor. When the lava cools

it creates a new seafloor.

Magma

Ocean Floor

Hess said that magma rises to the surface. As the magma tries to escape it causes the

seafloor to spread and make room for it. When the magma escapes it flows to the sides of the seafloor. When the lava cools

it creates a new seafloor. 1

Hess said that magma rises to the surface. As the magma tries to escape it causes the

seafloor to spread and make room for it. When the magma escapes it flows to the sides of the seafloor. When the lava cools

it creates a new seafloor.

Magma

Ocean Floor

2

Hess said that magma rises to the surface. As the magma tries to escape it causes the

seafloor to spread and make room for it. When the magma escapes it flows to the sides of the seafloor. When the lava cools

it creates a new seafloor.

Magma

3

Ocean Floor