Seafloor spreading is the process by which new oceanic crust is formed through volcanic activity at mid-ocean ridges, pushing the tectonic plates apart. Magma rises through cracks between the plates and hardens into new crust, causing the plates to spread further. This spreading helps explain continental drift and the theory of plate tectonics.

1. By Charles
Allen Philips
Sea-floor spreading

2. The sea floor
• The sea-floor of earth
is one of the most
unique things in the
whole world.
• Seafloor-spreading is
one of the many
things that happens in
the seafloor

3. What is seafloor-spreading?
• Seafloor-spreading is the formation of new
areas of oceanic crust, which occurs
through the upwelling of magma at mid-
ocean ridges and its subsequent outward
movement on either side.

4. What does it do?
• Seafloor spreading helps explain
continental drift in the theory of plate
tectonics

5. How does it occur?
• Sea floor spreading starts with volcanic
activity on the ocean floor. When the earth
cracks apart at the plates, magma rises to
the surface and pushes the plates farther
apart.

6. That’s all
hope you learned a lot
Because its question

7. questions
• What is sea floor spreading?
• How does it occur?
• What does it do?