Warm up
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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

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

Viscosity

  • Measure of resistance for how well a fluid can flow. How “sticky” a fluid is.

    More viscous = slower flowing

    Less viscous = faster flowing


What you need at your tables

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


Testing viscosity

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.


Ideas on how to change a fluids viscosity

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?


How to change viscosity

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


Exit ticket

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?


Station day

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


As you move around the room

As you move around the room…


Anatomy of a volcano draw a cross section of a volcano with these parts

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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