And from the look of this god aweful concoction, swiftly followed by another
eruption!
Chris Mawer wrote:
> ...and after this, the students eat the whole lot, simulating subduction.
>
> >Demonstration
> >The Rock Cycle
> >
> >
> >
> >Materials
> >1. Microwave
> >
> >2. Gram Crackers
> >
> >3. Marshmallows
> >
> >4. Hershey's Chocolate
> >
> >5. Icing
> >
> >Safety
> >Address any rules concerning food in the classroom.
> >
> >Procedure
> >1.Simulate magma rising and cooling using a box of gram crackers,
> >marshmallows, and chocolate.
> >
> >2.Have students pull out one gram cracker, one marshmallow, and a piece of
> >chocolate to simulate erosion.
> >
> >3.Have students combine sediments (gram cracker, marshmallow, and
> >chocolate). Use icing to signify Lithification.
> >
> >4.Put the combination in the microwave and cook it.
> >
> >Questions
> >1.What does lithification mean?
> >
> >2.What does Metamorphism mean?
> >
> >3.What will happen with extra heat and pressure?
> >
> >4.What are two different kinds of erosion?
> >
> >5.Tell me another route that could be taken in the rock cycle.
> >
> >Explanation
> >This demonstration is a model of what happens during the rock cycle. Magma
> >rises to the surface, when it cools igneous rocks are formed. The rocks
> >are eroded either chemically or mechanically. The sediments are lithified
> >into sedimentary rocks. When they are put under extreme heat and pressure
> >the rocks become metamorphosed. If they are put under extreme heat and
> >pressure they change into magma again.
>
> Sorry!
> Chris
>
> ...........................................................................
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> Dr Chris Mawer : email: [log in to unmask]
> PO Box 2491 : tel: (+61-7) 3254-4838
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> ...........................................................................
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