Phases, Eclipses and Tides

Science, Grade 7

Phases, Eclipses and Tides

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1. Phases, Eclipses and Tides
When the Sun and Moon are at 90 degrees to one another, the total gravitational pull on the oceans is at its minimum, and the high tide is called a neap tide. These tides have the least difference between consecutive high and low tides. Neap tides occur twice a month during the first and third quarter moon phases.