Simple Review

Who proposed the seafloor spreading theory?

• Harry Potter

• Harry Houdini

• Prince Harry

• Harry Hess

What is seafloor spreading?

• The age of rocks and the magnetic strips in the ocean floor.

• Is the process where new oceanic crust forms at the mid-ocean ridges and moves away from them.

• plates movement is due to convection currents in the mantle.

• evidences from fossils imbedded in rocks and rock formations.

Where does seafloor spreading occur?

• continental crust

• mid-ocean ridges

• inner core

• mantle

When was the seafloor spreading theory proposed?

• 1973

• 1969

• 1960

• 1970

Why is seafloor spreading important in plate tectonics?

• It explains how tectonic plates move and supports the theory of continental drift.

• It refers to the landmass called Pangaea.

• It explain the evidences from fossils imbedded in rocks and rock formations.

• It elaborates the mantle as the middle layer of the earth.

How does new crust form during seafloor spreading?

• Magma rises from the mantle, cools, and solidifies to form new oceanic crust.

• The magnetic stripes in the ocean floor support the seafloor spreading theory.

• It shows fossils imbedded in rocks.

• It is made up of gold and carbon in the seafloor spreading.