The water physically falling would be yes, but the water that has yet to fall would be an example of potential energy. To answer your question It is true.
False, it is chemical energy
It is true.
The phases in the waterfall model are in Iswr and overlapped is true.
True, in the case of coal it is potential chemical energy
false; you cannot get energy from nothing, it is conserved
false. A strong west wind blowing across a region is an example of kinetic energy, not potential energy. Wind energy is kinetic energy that is present in moving air that is mean air horizontal movement produced its power
false. you're confusing it with solar (sun) energy. geothermal energy is like what is used to create energy in iceland for example. geothermal energy is created through pipes that carry water deep down under the earth's crust where it is heated by underground magma
This is false.
False. It loses energy.
No, There could be atomic states (optically excited electronic energy levels of atoms, and of semiconductors for example) that can store energy which is not regarded as heat (which can be sensed by a thermometer). Magnets can store lots of energy which is not thermal. Thermal energy is the energy which is stored as vibrations of atoms and molecules, detected by a thermometer of some kind.
False
False the only unlimited source of cheap energy is the sun