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प्रश्न
How are tides related to navigation?
उत्तर
Since tides are caused by the earth- moon-sun positions which are known accurately, the tides can be predicted well in advance. This helps the navigators and fishermen plan their activities. Tidal flows are of great importance in navigation. Tidal heights are very important, especially harbours near rivers and within estuaries having shallow ‘bars’ at the entrance, which prevent ships and boats from entering into the harbour. Kolkata port on Hugli river is an example for it.
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संबंधित प्रश्न
What are tides?
Name one factor that causes tides.
What is the time interval between tides? Name the factors responsible for this time interval?
What are Spring and Neap tides?
State one difference between waves and tides.
Give reasons for the following:
There are two high and two low tides in a day.
Give reasons for the following:
Each day a tide is delayed by 26 minutes.
Discuss the origin of tides. Illustrate the formation of Spring Tides.
Differentiate between High Tides and Low Tides.
Give a geographical reason:
Tides are influenced more by the moon than the sun.
If there is a high tide at 7 am, find the timings of the next high and low tides on the same day at a given place.
In what way will the following depend on the tides?
Steering a ship
In what way will the following depend on the tides?
Fishing
In what way will the following depend on the tides?
Going to coastal areas for trips
Differentiate between
High tide and low tide.
Describe the positive effects of tides.
What are tides?
How are tides caused?
