WHAT IS A TIDE? HOW ARE TIDES FORMED? pls
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Answer:
❖The rhythmic rise and fall of ocean water twice in a day is called as a tide.
❖When water covers much of the shore by. raising to its highest level then it is called high. tide.
❖When water falls to its lowest level and recedes from the shore it is low tide.
IM STUDYING 8TH CLASS
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Answer:
Tides are the regular rising and falling of the Earth's ocean surface caused by the gravitational forces between the Earth, the Moon, and the Sun. They are a result of the gravitational pull of these celestial bodies on the Earth's oceans. Tides are a natural and predictable phenomenon, and they occur along coastlines worldwide.
The primary factors that contribute to the formation of tides are the Moon and the Sun. Here's how tides are formed:
1. **Gravitational Pull of the Moon:** The Moon exerts a gravitational force on the Earth. This force varies with the distance between the Earth and the Moon. The side of the Earth facing the Moon experiences a stronger gravitational pull, creating a bulge of water in that area. This bulge is what causes high tide.
2. **Gravitational Pull of the Sun:** The Sun also exerts a gravitational force on the Earth, although it is weaker than the Moon's gravitational force. When the Sun, Earth, and Moon are aligned (during full moon and new moon), the gravitational pull of the Sun reinforces that of the Moon, resulting in higher high tides, known as spring tides. When the Sun and Moon are at right angles (during the first and third quarters of the moon), their gravitational forces partially cancel each other out, causing lower high tides, known as neap tides.
3. **Rotation of the Earth:** As the Earth rotates, locations on the Earth's surface move in and out of the areas with the bulges caused by the gravitational forces of the Moon and Sun. This leads to the rise and fall of the water level, creating the ebb and flow of the tides.
In summary, tides are formed due to the gravitational pull of the Moon and the Sun on the Earth's oceans. The combined effects of these gravitational forces, along with the Earth's rotation, create the regular and predictable patterns of rising and falling water levels that we observe as tides. Tides play a crucial role in the marine environment and have various practical applications, such as for navigation, fishing, and energy generation in some regions.
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