1. Convergent boundary – 3 types

3. Ocean-continent convergent boundary
Plate of oceanic crust collides with plate of continental crust. Oceanic crust is subducted (goes under) continental plate.

4. Ocean-ocean convergent boundary
Two oceanic crust plates collide. Older, denser plate usually subducts, site of Island Arc formation.

6. Continent-continent convergent boundary OROGENESIS
Suggested tips to give students: Many geology students remember this by thinking “Subduction leads to Orogeny.”

8. Plate Tectonics explains
chains of volcanic islands
Hot Spots

9. Lithospheric Plates Carry Continents and Oceans.
Suggested tips to give students: Alfred Wegener proposed the theory of Continental Drift in Wegener stated: “the Mid-Atlantic Ridge ... zone in which the floor of the Atlantic, as it keeps spreading, is continuously tearing open and making space for fresh, relatively fluid and hot sima [rising] from depth”. Crowle alluded to it in 1875 … but did not give it a name.
Lithospheric Plates Carry Continents and Oceans.

10. Suggested tips to give students:
Remember the “Ring of Fire”.

11. Earthquakes Tend to Occur at Plate Boundaries.