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Warm up:

Warm up:. Which one of the fluids at the front of the room will flow the fastest? Which will flow the slowest? Honey, Chocolate syrup, or Applesauce? . Make a prediction at your table, thinking about an explanation behind your prediction. Viscosity.

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Warm up:

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  1. Warm up: Which one of the fluids at the front of the room will flow the fastest? Which will flow the slowest? Honey, Chocolate syrup, or Applesauce? Make a prediction at your table, thinking about an explanation behind your prediction.

  2. Viscosity • Measure of resistance for how well a fluid can flow. How “sticky” a fluid is. More viscous = slower flowing Less viscous = faster flowing

  3. What you need at your tables: • A dixie cup with each of the following: • Chocolate syrup • Honey • Applesauce • A couple paper plates and plastic spoons

  4. Testing viscosity • First test the three unaltered substances: honey, chocolate syrup, and applesauce. • Place a small blob of each on the edge of a paper plate, slowly elevate and watch to see what happens… • Describe the fluids and their viscosity.

  5. Ideas on how to change a fluids viscosity… • If we wanted one of these fluids to flow faster or slower, what could we do to change it?

  6. How to change viscosity… • Now you need to come up and get chocolate chips and some heated honey. • The chocolate chips act as additional particulates such as silica that can be added to magma • Compare heated honey to the unheated, and see how adding “silica” changes viscosity of the chocolate syrup

  7. Exit Ticket • Before you leave, write down on a piece of paper which viscosity magma you think leads to a more explosive eruption and why. • Do volcanoes that erupt explosively have a high viscosity lava or a low viscosity lava? Why?

  8. Station Day • In table groups, you will travel to each of the 8 stations. Four of these stations are: • Shield volcanoes, stratovolcanoes, cinder cone volcanoes, and caldera volcanoes • The other four stations can be match to one of these types

  9. As you move around the room…

  10. Anatomy of a volcano:Draw a cross-section of a volcano with these parts • Crater: A steep-sided, usually circular depression formed by either explosion or collapse at a volcanic vent. • Eruption Cloud: The column of gases, ash, and larger rock fragments rising from a crater or other vent. • Magma Chamber: The subterranean cavity containing the magma which feeds a volcano. • Pipe: A vertical conduit through the Earth's crust below a volcano, through which magma passes • Plug: Solidified lava that fills the conduit of a volcano • Vent: The opening at the earth's surface through which volcanic materials issue forth • Dike: Formed when magma rises into an existing fracture or crack in the volcano, and then solidifies • Fissures: Elongated fractures or cracks on the slopes of a volcano.

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