What is the rise and fall of ocean water are called

They are the combined effects of the gravitational forces exerted by the sun and moon on the rotation of the Earth 

The rise and fall of water in the ocean is called the tide

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Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy