@ GiraffEars- You are absolutely right. When teaching the water cycle, it is not uncommon for it to be taught in relation to the rock cycle and the tectonic cycle along with the common energy inputs that power these cycles. The water cycle, or hydrologic cycle as it is often referred too, is dependent on solar energy for it to flow between the various geologic reservoirs. These reservoirs include oceans, plants, animals, the atmosphere, and the lithosphere where it accumulates as ground water and surface water.
This last reservoir is where the water cycle interacts with the rock cycle. Surface and ground water aids in sedimentation, weathering, and erosion. This has the effect of both creating rock, and breaking rock apart. The sedimentary rock and regolith then travels through the rock cycle where it is compressed into metamorphic rock or melted into igneous rock. This is the point in the rock and tectonic cycles where the internal energy of the Earth is input into these geologic systems.