Tides happen due to the gravitational interactions between the Earth and the Moon. We can say that the tides are pulled by the Moon's gravitational field and so it keeps on changing as it moves out of the Moon's range.
Now the question is: where does the Moon get the energy to be able to make the tides (pull water on Earth towards it). We all know that according to the law of conservation, energy cannot be neither created nor destroyed, so where does Moon's energy come from?
On Earth, an object (a ball) is provided with its energy/gravitational potential energy, from the energy we have from the food we have eaten, when we lift it. The source of its energy trails back to the Sun. Now can anyone please explain me where the energy source for moon is?