Question

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

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

Explanation:

Ridge push occurs at mid-ocean ridges where new crust forms and pushes older crust away. Slab pull happens when dense oceanic crust sinks into the mantle, pulling the rest of the plate along. Together, these two forces create a continuous "conveyor belt" motion that moves tectonic plates across the mantle. Convection is the underlying mantle process that drives these surface forces, but the direct plate movements creating the conveyor effect are ridge push and slab pull.

Answer:

ridge push and slab pull