Question

1. which types of plate movements create a \conveyor belt\ effect among tectonic plates?

convergence and convection
slab pull and convection
ridge push and slab pull
ridge push and convection

Explanation:

• Ridge push: At mid - ocean ridges, new oceanic crust is formed. The elevated position of the ridge causes the newly formed crust to "push" the older crust away from the ridge.
• Slab pull: When an oceanic plate subducts (dives) beneath another plate (either oceanic or continental), the dense subducting slab "pulls" the rest of the plate along. Together, these two mechanisms create a continuous movement of tectonic plates similar to a conveyor belt.
• Convergence is a general term for plates moving towards each other and does not directly relate to the conveyor - belt - like continuous motion. Convection in the mantle is a driving force for plate movement but is not one of the two main mechanisms that create the "conveyor - belt" effect when paired together.

Answer:

ridge push and slab pull