In our lesson, we used our prior knowledge about tectonic plates and began to deepen our thinking around what they could cause. We discussed how the movement of tectonic plates can cause earthquakes. There are three different tectonic plate boundaries where earthquakes occur: convergent, divergent and conservative. We then demonstrated our newfound knowledge in an experiment. We used crackers and cream to show how the tectonic plates move at the different boundaries. At the divergent plate boundary, the tectonic plates move apart. At a convergent plate boundary, the plates move together and the denser oceanic plate subducts under the lighter continental plate. Finally, at a conservative plate boundary, tectonic plates slide past each other. Friction happens and pressure builds up which is released as an earthquake. We showed these using the crackers and cream!
