I'm 100% sure about this answer as i have studied this in school and this is called
electricity or hydro electricity both are the same thing but with different names so if ure doing a fill in the blank and hydro isn't there just use electricity
i hope this helps and is exactly what your looking for. If you need more help just ask, also if this is wrong or your some how confused ask bellow ill try and answer to the best of my ability
