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Ocean Tides and Currents Video Lecture | Social Studies (SST) Class 7 (Old NCERT)
FAQs on Ocean Tides and Currents Video Lecture - Social Studies (SST) Class 7 (Old NCERT)
| 1. What causes ocean tides? |  |
Ans.Ocean tides are primarily caused by the gravitational pull of the moon and the sun on the Earth's oceans. The moon's influence is stronger because it is closer to Earth, resulting in the regular rise and fall of sea levels known as tides.
| 2. How often do tides occur? | |
Ans.Tides typically occur twice a day in most locations due to the Earth’s rotation and the gravitational effects of the moon and sun. This results in two high tides and two low tides approximately every 24 hours.
| 3. What are tidal currents? | |
Ans.Tidal currents are the horizontal movement of water that occurs as tides rise and fall. As water moves into shore during high tide, it creates an incoming current, and as water recedes during low tide, it creates an outgoing current.
| 4. How do tides affect marine life? | |
Ans.Tides play a crucial role in marine ecosystems by influencing feeding patterns, breeding cycles, and the distribution of nutrients. Many marine organisms, including fish and crustaceans, depend on tidal movements for spawning and feeding.
| 5. Can tides be predicted? | |
Ans.Yes, tides can be predicted using mathematical models that take into account the positions of the moon, sun, and Earth, as well as local geographical features. Tide tables and charts are generated to help predict tidal patterns for specific locations.
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Oct 05, 2025
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Video Description: Ocean Tides and Currents for Class 7 2025 is part of Social Studies (SST) Class 7 (Old NCERT) preparation.
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