The energy released as water flows downhill from behind a dam is an example of a) hydroxyl ion formation.
b) kinetic energy
c) activation energy
d) potential energy

B, kinetic energy. water gains potential energy just before it spills over the top of a dam. the potential energy is converted into kinetic energy as water flows downhill

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.