UPSC Civil Services Model Paper 1

● Waves are actually the energy, not the water as such, which moves across the ocean surface.
◦ Water particles onlytravel in a small circle as a wave passes .
◦ Wind provides energy to the waves.
◦ Wind causes waves to travel in the ocean and the energy is released on shorelines.
◦ The motion of the surface water seldom affects the stagnant deep bottom water of the oceans. Hence, statement 1 is not correct.
● As a wave approaches the beach, it slows down.
◦ This is due to the friction occurring between the dynamic water and the seafloor.
◦ And, when the depth of water is less than half the wavelength of the wave, the wave breaks.
◦ The largest waves are found in the open oceans. Hence, statement 2 is not correct.
◦ Waves continue to grow larger as they move and absorb energy from the wind.