1. Types of plate boundaries
2/21/17
Types of plate boundaries
Objective: I will identify the three types of plate boundaries and explain the geologic processes that happen at each.
PAGE 61

2. “Big Idea” for this Unit
HOW DO MAJOR GEOLOGIC FEATURES FORM?

3. Plate Boundary where two tectonic plates border one another
there are 3 types of plate boundaries

5. Divergent Boundary
mantle magma is rising, plates move apart

6. Divergent Boundary
can separate land masses, forming seas and oceans

8. Divergent Boundary
Key features: mid-ocean ridge, rift valley, spreading center volcanoes
Ex: Mid-Atlantic Ridge, Red Sea

9. Convergent Boundary magma is sinking, plates come together
subduction- one plate sinks under another due to differences in density

11. Continental-Continental (no subduction)
Key features: large folded mountains
Ex: Himalaya Mountains

12. Oceanic-Continental (subduction)
Key features: trench, volcanic mountain chain
Ex: Andes Mountains

13. Oceanic-Oceanic (subduction)
Key features: deep-ocean trench, volcanic island arc
Ex: Japan

14. Transform Boundary
does not produce magma, plates slide past each other

15. Transform Boundary
Key features: earthquakes (plates do not slide smoothly), fault lines
Ex: San Andres Fault

16. Output Activity (Page 60)
Complete your “Plate Boundary Chart” in detail
Use your Plate Tectonic Model, class notes, and textbook pages
When finished, glue/tape onto page 60.
Extra credit stamps will be given tomorrow if completed in full, with color and a title.