1. Take a 1-kilogram lump of stiff plasticine. Roll it into a flat slab about 2 cm thick. Carefully cut out some blocks of plasticine using a penknife. They will be the tectonic "plasticine plates".
2. Put two blocks together so that their edges are in contact. Push them against each other. Do "mountains" form as the plasticine plates collide with each other? In nature, it will take millions of years for this kind of
pushing. This is how Fold Mountains are formed when two tectonic plates move towards each other.
3. Put another two blocks together so that their edges touch. Try to slide them past one another by pushing them against. Do they move smoothly, or do strains, bends and jerky movements develop? Put part of one block under the edge of another and push them together. Does this "subduction" works smoothly?