Question

The rhythmic rise and fall of ocean water twice in a day is called _________?
$1)$ Tide
$2)$ Ocean Current
$3)$ Wave
$4)$ Tsunami

Answer 1

Hint: The ocean is a vast saltwater body that occupies about $71\% $ of the Earth's surface. The ocean contains about $97$ percent of the world's water. As a result, the ocean has a significant effect on weather, temperature, and human and other species' food supplies.

Complete answer:
Option $1$: This is the correct option because the combined effects of the gravitational forces exerted by the Moon and the Sun, as well as the rotation of the Earth, induce tides, which are the rise and fall of sea levels. Tides lift seawater levels, exposing a significant portion of the ocean to erosion. It is beneficial for tidal ports with shallow water, which makes it difficult for large ships to reach. Tidal currents are a very promising source of tidal energy that is being harnessed on a large scale by many developing countries, including India to some degree.

Option $2$: This is not correct option because an ocean current is a constant, guided flow of sea water caused by a variety of forces acting on the water, such as wind, the Coriolis effect, breaking waves, cabbeling, and variations in temperature and salinity.

Option $3$: This is not correct option because wind flowing over the sea causes waves to form. The wind's frequency, size, and fetch all influence the characteristics of waves (distance a wave travels). The more wind there is, the more pressure there is on the sea's surface, and therefore the bigger the wave.

Option $4$: This is not correct option because tsunami is a sequence of waves triggered by the movement of a large amount of water in a body of water, usually an ocean or a large lake. Tsunamis may be caused by earthquakes, volcanic eruptions, and other above- or below-water explosions.

Option $1$ is the correct answer.

Note: It can be disastrous if the tide rises too high and floods the surrounding coastal areas. Tides are important for the growth and survival of habitats including mangrove forests and coral reefs.