True or False
1. A constructive plate boundary occurs when two plates move away from each other.
2. A destructive plate boundary occurs when an oceanic plate is forced under (or subducts) a continental plate.
3. A conservative plate boundary occurs when two plates slide past each other.
4. Collision plate boundaries occur when two continental plates move towards each other.
5. Convection currents transfer hot, buoyant magma to the lithosphere at plate boundaries and hot spots.
6. Convection currents also transfer denser, cooler material from the crust to Earth’s interior through the process of subduction.
7. Slab‐pull is the result of a plate subducting at a steep angle through the mantle.
8. The ridge‐push theory maintains that new crust cools as it moves away from the ridge, becoming denser, sinking, and forming a slope on the mid-oceanic ridge.
9. When a plate is subducted at a steep angle, it also creates trench‐suction that pulls the overlying plate, and the trench, toward the ridge.
10. The main driving force of plate tectonics is gravity.