put the steps of seafloor spreading in order from first to last. rock moves outward. magma hardens. magma…

put the steps of seafloor spreading in order from first to last. rock moves outward. magma hardens. magma pushes upward. a crack forms.

put the steps of seafloor spreading in order from first to last. rock moves outward. magma hardens. magma pushes upward. a crack forms.

Answer

Brief Explanations:

Seafloor spreading starts with a crack forming in the ocean - floor. Then magma pushes upward through the crack. The magma cools and hardens to form new rock. Finally, the newly - formed rock moves outward.

Answer:

  1. A crack forms.
  2. Magma pushes upward.
  3. Magma hardens.
  4. Rock moves outward.