How do plate tectonics relate to the formation of crustal features on the earth

Plate tectonics relate to the formation of crustal features on the earth, because the plates are pretty much side by side.

Imagine 2 pieces of paper. When they crush together, the two sides that are pressed together goes upward. This is an example of 2 tectonics crushing together to become a mountain.

Now imagine 2 pieces of paper that are splitting apart from each other. This is how valleys are formed.

Now imagine 2 pieces of paper moving side by side, up and down. This is an example of earthquakes

hope this helps