Converging Boundaries and Landforms Warm Up 9-6 1. What are the 3 types of plate boundaries? 2. What are the 3 types of convergent boundaries? 3. What is the zone of subduction? 4. If a continental plate and oceanic plate are converging, which will go under the other? Converging Boundaries and Landforms Continental – Continental Convergent Boundaries When 2 continental plates collide, they create mountain ranges This happens because the rock is less dense than ocean rock and is too light to be pulled under the lithosphere Continental – Continental Convergent Boundaries Mt. Everest, 29,029’ Example: India Plate converging with Eurasia Plate to create the Himalayas which include the tallest mountains, Mt. Everest and K2 K2, 28,251’ The India plate is still moving Northward which is pushing the Himalayas 1 inch higher each year. Continental - Oceanic Convergent Boundaries When a continental and oceanic plate collide, they create cascade volcanoes (volcanic mountain ranges) The subducted (sunken) plate melts into magma. The released water vapor and gases create pressure which pushes the magma upward to form the volcano and cause eruptions Continental - Oceanic Convergent Boundaries Example: The Juan de Fuca Plate is converging with the North American Plate near Washington/Oregon which has created Mt. St. Helens and Mt. Adams Mt. St. Helens 1980 Mt. Adams Oceanic – Oceanic Convergent Boundaries When 2 Oceanic Plates collide, they create trenches and volcanic island arcs The trench will occur in the zone of subduction The melting of a plate creates magma, and releases water vapor and gases which creates pressure pushing the magma upward Oceanic – Oceanic Convergent Boundaries Example: Mariana Trench Oceanic – Oceanic Convergent Boundaries Example: Hawaiian Volcanic Island Arc Continental Divide 1) Which type of boundary convergence formed them? 2) Look at the map to the left, what is weird about where these mountains are? 3) How do you explain this? Your World Project This will be a project that runs through multiple units so you need to hang on to it! You will receive a grade for each section of this project. This is probably the largest project of the year so take it seriously! Your World Project – Part Uno • Start by drawing your own supercontinent (like Pangaea) and giving it a name • Now label all of the landforms and assign them names (such as Ascavaris Ocean, Pintapu Peninsula, Gulf of Saberi, etc.) • You can also add forests, deserts, lakes, rivers, etc… and name them. • You must have at least 20 named landforms! Your World Part 1 Rubric 10% - Have a non-basic shape for your supercontinent 20% - Have at least 20 named landforms 10% - Include at least 4 landforms that are on the supercontinent such as forests, mountain ranges, volcanoes, etc. 10% - Trace your supercontinent and landforms onto another piece of paper (do not transfer the names) 20% - Cut your supercontinent out, and then cut it into at least 3 continents 20% - Glue your smaller continents onto a blue piece of paper as they would have drifted apart 10% - Relabel landforms on new continents and color Now Trace Your World onto a Second Page Be sure to carry over your landforms (although you don’t need to rewrite all of the names right now).