MODELING CLAY ACTIVITY
boxes of “Prang” Modeling Clay in two different colors (Gray for
continental, Blue for ocean crust.)
Each box contains four sticks.
students into small groups giving each group one stick of Gray and one
stick of Blue clay.
flatten both sticks to make two different colored plates. The blue or ocean plate should be much
thinner than the gray or continental plate.
the work surface and both plates.
This step is important for plate movement and may need to be
repeated if clay sticks.
clay plates to examine what happens at plate boundaries with different
movement. Pushing plates together
shows convergence while sideways sliding shows transform or strike-slip
faulting. To show crust-to-crust
or ocean-to-ocean plate interaction cut plates in half or exchange with
the Ocean and continental plates together should result in the thinner
plate sliding underneath the thicker one and an uplifting of the
continental crust. This
demonstrates the crust deformation in a subduction zone leading to the
formation of Volcanic Mountain ranges.
An example of this is the subduction of the Nazca Plate beneath the
South American Plate leading to the formation of the Andes.
of two continental plates results in buckling and uplifting of crust. An example is the convergence of the
Indian Plate with Asian Plate resulting in the formation of the Himalayas
two plates sideways past each other results in sticking and releasing at
the boundaries with little or no crust uplift. This shows the movement at a Transform Fault. An example of this type of strike-slip
fault is the San Andreas Fault in California.
make a diagram of each boundary interaction to keep in a Plate Tectonics