Components of the Environment and interrelationships — Social Science STD 7 — Question
Gujarat BoardEnglish MediumSTD 7Social ScienceComponents of the Environment and interrelationships3 Marks
Question
Tides-Ebbs
✓
Answer
The Sea water rises and falls (recedes) twice a day.
The rising of the sca water is called "Tide' and the falling
(receding) of the sea water is known as $'Ebb'$.
At the time of high tide, the surface of the sea water rises and rushes towards the shore.
At the time of ebb (low tide), the sea water falls (recedes) and returns to the sea.
The tide-ebbs are caused due to the gravitational force of the sun and the moon.
The tide-ebbs do not occur on all days at all places.
Spring (High) tide occurs on New moon (Amavas) day and Full moon (Poonam) day and the neap (low tide occurs on middle days of Sud and Vad (on seventh and eighth day).
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