1. Divergent boundary
2. Convergent boundary
3. Convergent boundary
4.
a. Two plates carrying oceanic crust collide — One plate subducts beneath the other, forming a deep ocean trench and often causing volcanic activity and earthquakes.
b. Two plates carrying continental crust collide — Neither plate subducts easily; instead, the crust crumples and thickens, forming high mountain ranges (like the Himalayas).
c. A plate carrying oceanic crust collides with a plate carrying continental crust — The denser oceanic plate subducts beneath the less dense continental plate, forming a trench, volcanic arcs, and mountain ranges on the continental side.
5. Convection currents in the mantle caused the movement of the continents from one supercontinent to their present positions.
6. Theory
7. Tectonic plates
8. Rift
9. Mid-ocean ridge
10. Plate tectonics
Parent Tip: Review the logic above to help your child master the concept of plate tectonic boundaries worksheet.
