Plates Move together : CONVERGENT PLATE BOUNDARIES

Learning goals : HOW ARE THE POSITIONS OF THE CONTINENTS CHANGED OVER TIME? When plates collide or meet Ocean plates that meet another ocean plate or a continental plate will be pulled under either the other ocean plate of continental plate in a process called subduction. The worlds largest earthquakes happen when the subducting plate gets stuck then suddenly breaks apart. The most explosive and dangerous volcanoes are found near convergent subducting boundaries. The worlds deepest landforms, trenches are found at subducting convergent boundaries When two continental plates collide folding up to form mountain ranges

Plates move together CONVERGENT BOUNDARY Also called: – collision boundary, – destruction boundary, Plates are pushed together Crust is usually destroyed Main Idea Supporting details Overriding plate Subducting plate

Processes that destroys crust SUBDUCTION occurs underwater Plates are pushed together Subduction occurs in the ocean – The place that subduction takes place is often called a Subduction Zone – Subduction destroys lithosphere UPLIFTING – occurs on land – When 2 continental plates meet – NO lithosphere is destroyed Mail IdeaSupporting details

3 types of convergent boundaries DESTRUCTIVE BOUNDARY– land is destroyed ocean plate moves over another ocean plate in a process called subduction – This occurs at a location called a subduction zone Convergent boundary – 1. Ocean to Ocean Main idea Supporting details Subduction zone

Landforms created at an ocean to ocean convergent boundary Landforms created: – Deep ocean Trenches – Volcanic Arc islands – Volcanoes

Geologic Activity at an Ocean to Ocean convergent boundary Earthquakes Volcanic eruptions Ocean lithosphere Ocean lithosphere Volcanic Arc Island Subduction zone Draw and label this diagram in your notes

Convergent boundary– ocean to continent DESTRUCTIVE BOUNDARY Ocean plate moves under continental plate in process called subduction Geologic Activity – Earthquakes – Explosive Volcanic eruptions main ideaSupporting details

Convergent boundary– ocean to continent Landforms, features and structures Landforms created – Deep ocean trenches occur where plates meet – Volcanic mountain ranges are formed Ocean lithosphere Continental lithosphere Subduction zone Draw and label this diagram in your notes

Convergent boundaries – 3. continent to continent NO CRUST IS DESTROYED Plates move into each other – process =up lifting Landform created: – Mountain ranges – Volcanoes extremely rare Geologic activity: – Earthquakes Main idea Supporting details

Many mountain ranges have formed this way -Appalachians -Himalayans -Rocky mountains -Alps

Review: HOW ARE THE POSITIONS OF THE CONTINENTS CHANGED OVER TIME? When plates collide or meet Ocean plates that meet another ocean plate or a continental plate will be pulled under either the other ocean plate of continental plate in a process called subduction. The worlds largest earthquakes happen when the subducting plate gets stuck then suddenly breaks apart. The most explosive and dangerous volcanoes are found near convergent subducting boundaries. The worlds deepest landforms, trenches are found at subducting convergent boundaries When two continental plates collide folding up to form mountain ranges

Bubble Maps are used to describe things. 1. Create 3 bubble maps and describe the 3 types of CONVERGENT PLATE BOUNDARIES 2. Copy the example that has been provided for you 3. Then do one for name of Convergent boundary Name of force Name of geologic landform created 1 bubble for each landform Name of geologic ACTIVITY that happens 1 bubble for each activity

Ocean to Ocean convergence Trenches Volcanic Arch Islands Volcanoes Earthquakes compression Describing an ocean to ocean convergent boundary

Ocean to continent convergence Earthquakes Volcanic mountain ranges Trenches Compression Explosive Volcanic eruptions Describing an Ocean to Continent convergence