Your probably asking yourself, why did he tell me that the San Andreas Fault is a transform plate boundary if I don't know what is? Well a Transform plate boundary is when two plates slide past each other. Imagine you holding playdoh. This playdoh is in one piece. You take the upper portion and move it to the right 👉🏼 and you take the lower portion and move it to the left 👈🏼. This is shear stress, that acts upon transform plate boundaries. So in a real example of a divergent plate boundary, the plates would be sliding against each other. This isn't always a smooth transition. So sometimes the plates get stuck. When the plates get stuck shear stress will become to great and cause the rocks to break. When this occurs, this causes an earthquake. Different types of landforms that a transform plate boundary include transform faults and fault zones. This is kind of like a strike-slip fault in the middle of 2 plates in the Earth's crust.
This is an example of a subduction zone. A subduction is a part of our final plate boundary, convergent plate boundaries 😎
Now onto the final plate boundary, the convergent plate boundary. The movement of a convergent is different from the others plate boundaries. The plates come together and collide with each other. 👉🏼👈🏼 This type of stress is called compression. When you hear compression you probably think of compressing. And that's totally right. When a machine compresses an object, it pushes it together to kinda smash it. That's what these plates are doing. So when there are two plates that are colliding, the denser plate sinks below the more buoyant plate this is called subduction. When an object is dense (heavier than a buoyant object) it tends to sink in water. And when an object is more buoyant (lighter than a dense object), it ends to stay afloat.