Google Interview Question: Why are there two high tides ... | Glassdoor

Interview Question

Associate Mechanical Engineer Interview Mountain View, CA

Why are there two high tides in one day?

mechanical engineering

Interview Answer

1 Answer


There are two high tides because the moon's gravitational field pulls on the water around the earth and the earth itself (the earth also pulls on the moon) as it orbits. The first hight tide occurs on the side of the earth that is closest to the moon, and the second high tide occurs on the side that is farthest from the moon, where water is "left behind" by the motion of the earth towards the moon.

Interview Candidate on Aug 14, 2010

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