Plate Boundaries All major interactions among plates occur

Plate Boundaries All major interactions among plates occur along their boundaries.

Figure 7. A The Breakup of Pangaea Due to Tectonic Plate Movement

Plate Boundaries

Convergent Plate Boundaries - Subduction

Divergent Plate Boundaries - Spreading

Transform Plate Boundaries - Scraping

Directions and Rates of Plate Motions Directions and rates of plate motion in centimeters per year

Plate Tectonics Into the Future Scientists have extrapolated present-day plate motions into the future some 50 million years. Areas west of the San Andreas Fault will slide northward past the North American plate. Africa collides with Eurasia, closing the Mediterranean and initiating mountain building. Australia and new Guinea are on a collision course with Asia.

Earth’s Future Supercontinent

Videos Snippets Bill Nye - Earth Science Continental Drift, Seafloor Spreading, & Plate Tectonics • Watch the videos at the following links: §https: //goo. gl/FAj 0 YR §https: //goo. gl/JJfna 6 §http: //goo. gl/R 4 OMa. O

Knowledge Check Identify these types of plate boundaries! Convergent plate boundary (subduction zone)

Knowledge Check Identify these types of plate boundaries! Transform plate boundary (strike-slip fault)

Knowledge Check Identify these types of plate boundaries! Divergent plate boundary (sea-floor spreading)

Knowledge Check Where on the Earth is new lithospheric crust created? Where on the Earth is older lithospheric crust recycled? at divergent plate boundaries (mid-oceanic ridges) at convergent plate boundaries (subduction zones)

Knowledge Check What is a convergent plate boundary? an actively deforming region where two (or more) tectonic plates or fragments of lithosphere move toward one another and collide. What can occur at convergent plate boundaries? subduction of one colliding plate under the other, leading to trench formation, mountain -building, earthquakes, and volcanism

The Launch Pad Monday, 2/6/17 What is a divergent plate boundary? a linear feature that exists between two tectonic plates that are moving away from each other. What can occur at divergent plate boundaries? seafloor (or land) spreading, ridge or rift formation, creation of new crust, milder volcanism

Knowledge Check What is a transform plate boundary? a plate boundary where two plates are moving alongside each other either in different directions or at different speeds What can occur at transform plate boundaries? tremendous amount of friction generated, leading to tectonic pressure build-up, severe earthquakes