1. Quick Review 1. Which has a longer wavelength? X-rays or infrared radiation 2. Which has a high frequency? Microwaves or radio waves

2. Quick Review 3. Which has more energy? Visible light or infrared radiation 4. Which would be more damaging to human tissue? UV rays or gamma rays

3. Lesson 7.5 – Convergent Boundaries

4. I can describe convergent boundaries and the formations they cause on land (mountains) and underwater (trenches). (4b) 1. Boundaries are the spots were two plates meet

5. 2. Convergent Boundaries: where two tectonic plates are moving toward one another A. The word converge means come together. 3. There are three different types of convergent boundaries. The types are based on the two types of crust colliding. I can describe convergent boundaries and the formations they cause on land (mountains) and underwater (trenches). (4b)

6. A. Oceanic – oceanic convergent boundary = two plates with ocean lithosphere are colliding. I can describe convergent boundaries and the formations they cause on land (mountains) and underwater (trenches). (4b)

7. B. Oceanic – continental convergent boundary = a plate with ocean lithosphere is colliding with a plate with continental lithosphere. I can describe convergent boundaries and the formations they cause on land (mountains) and underwater (trenches). (4b)

8. C. Continental – continental convergent boundary = two plates with continental lithosphere are colliding. I can describe convergent boundaries and the formations they cause on land (mountains) and underwater (trenches). (4b)

9. 4. Underwater convergent boundaries form trenches. A. Oceanic – oceanic and oceanic – continental convergent boundaries B. A trench is like a deep ditch in the seafloor. I can describe convergent boundaries and the formations they cause on land (mountains) and underwater (trenches). (4b)

10. C. The deepest trench in the world is the Mariana Trench. It is 6.85 MILES below the ocean’s surface at its deepest part. I can describe convergent boundaries and the formations they cause on land (mountains) and underwater (trenches). (4b)

11. 5. Convergent boundaries on land form mountain ranges. A. Continental – continental convergent boundaries. B. Large mountain ranges like the Himalaya Range in Nepal and the European Alps between Italy and Germany were formed by continental- continental convergent boundaries. I can describe convergent boundaries and the formations they cause on land (mountains) and underwater (trenches). (4b)

13. Guided Practice 1. Label the type of convergent boundary shown below. 2. Put a star next to the image(s) that show a boundary where trenches form and a dot next to the image(s) that show a boundary where mountains form.

14. Do you know what that means?

15. (5 questions)

16. 1. What term below could be used to describe the place where two tectonic plates meet? A. Pangea B. Lithosphere C. Boundary D. Supercontinent

17. 2. Which term below could be used to describe when two tectonic plates are moving toward each other? A. Sliding lithosphere B. Convergent lithosphere C. Sliding boundary D. Convergent boundary

18. 3. Which term below could be used to describe when a piece of oceanic lithosphere is colliding with a piece of continental lithosphere? A. Oceanic – oceanic convergent boundary B. Oceanic – continental convergent boundary C. Continental – continental convergent boundary D. Lithosphere – Lithosphere convergent boundary

19. 4. Which statement below correctly describes where trenches form? A. Trenches form at oceanic – oceanic and oceanic – continental convergent boundaries. B. Trenches form at continental – continental and oceanic – continental convergent boundaries. C. Trenches only form at oceanic – continental convergent boundaries. D. Trenches only form at continental – continental convergent boundaries.

20. 5. Which statement below correctly describes the type of geologic formation found in the Himalaya Mountains? A. A oceanic – continental convergent boundary is found. B. A continental – continental convergent boundary is found. C. Both oceanic – oceanic and oceanic – continental convergent boundaries are found. D. Both oceanic – continental and continental – continental convergent boundaries are found.