GENERAL KNOWLEDGE

GK

INDIAN GEOGRAPHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many times normally tides come in 24 hours?
A
Four
B
Two
C
One
D
Not fixed
Explanation: 

Detailed explanation-1: -Coastal areas experience two high and two low tides every 24 hours and 50 minutes because the Earth rotates through two tidal “bulges” every lunar day. High tides occur every 12 hours and 25 minutes.

Detailed explanation-2: -Semi-diurnal Tide: The most common type of tidal pattern, Semi-Diurnal Tides take place twice daily. This means that over the course of a day there are two high tides and two low tides. The tides rise and fall to the same level each time. They usually happen when the moon is in line with the equator.

Detailed explanation-3: -Also, the moon’s orbit around the Earth is tilted by about 5 degrees from the plane of Earth’s orbit around the sun. Thus, the maximum tidal bulge will usually be either above or below the equator. Sometimes, some places on Earth experience only one of the two tidal bulges in a day, producing only one high tide.

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