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Warm-Up Finish all assignments from 10/26/15 and turn into front table.

Did a Massive Volcano Cause Massive Extinction?!

4.3- Volcanoes! Objective: SWBAT compare and contrast the three types of volcanoes. Agenda: Warm Up Objective Supermassive volcano article Guided notes Stations Exit Ticket

Map of Volcanoes around the WORLD!

White Board Review What is the difference between magma and lava? What is the type of rock that forms when magma cools and hardens? What type of rocks forms when lava cools and hardens? THEY ARE BOTH TYPES OF IGNEOUS ROCK! What’s the difference?! –Think location…

How a volcano erupts is based on viscosity. What is viscosity? Viscosity is how resistant a substance is to flowing. For example, honey is more viscous than water. Magma that contains more silica will be more viscous, magma that contains less silica will be less viscous.

Magma that is very viscous will explode, magma that is less viscous will flow. Lava that is hotter will be less viscous (like if you heat up honey) and will flow more. Lava contains dissolved gases, and if the lava is very viscous, those bubbles cannot expand. Instead, the bubbles will explode upwards.

Volcanoes also eject pyroclastic materials, which is a fancy name for particles. These particles can be as small as ash or as large as boulders. Video below…

There are 3 main types of volcanoes, but they all have this general form: Draw and Label the diagram

Draw and Complete the following chart with a partner. Volcano TypeDescriptionShapeType of Eruption Draw a picture of the volcano Shield Cinder Composite/ Stratovolcano

Lahar Lahar is a mixture of hot or cold rock and water flowing down the side of a mountain.Lahar Forms when ice melts during a volcanic eruption.

Ring of Fire Ring of Fire DiagramDescription Ring of fire is where roughly 85% of the worlds volcanoes are located. Found along the edge of the Pacific plate. Majority of the pacific plate is part of a convergent boundary.

Calderas Calderas - are volcanic depressions that are created when the magma chamber is drained and the volcano collapses in on itself.

Volcanic necks Volcanic necks are formed when a volcano has been weathered down so that only the magma conduit (pipe) is left.

Lava Plateaus Lava plateaus are made from very low-viscosity lava flowing out of a fissure (crack) in the ground. The lava spreads really far and creates a flat landform.fissure

Gallery Crawl! 6 stations around the room Work with your group to go to each station, read the passage and answer the questions on your sheet

EXIT TICKET: 1.What is continental drift? 2.Where are plate tectonics located? 3.What are the 3 different types of plate boundaries? 4.What is viscosity? 5.Name and describe one of the types of volcanoes.