Final answer:
The two tidal bulges caused by the Moon's gravity lead to two high tides and two low tides each day at every coastal city as Earth rotates through them. The alignment of these bulges with the Moon as Earth spins causes the regular rhythm of tidal changes experienced by coastal cities.
Step-by-step explanation:
The formation of tides is influenced by the gravitational pull of the Moon, which results in two major tidal bulges—one on the side of Earth facing the Moon and the other on the opposite side. As the Earth rotates, coastal cities pass through these bulges, experiencing high and low tides. Each coastal area analyzed in Task 1 would experience two high and two low tides within a 24-hour period due to Earth's rotation through the Moon-induced tidal bulges.
The alignment of the tidal bulges with the frequency of tides at a coastal city depends on Earth's rotation. Understanding that the Earth rotates underneath these bulges and considering that the tidal bulges keep their alignment with the Moon, we can deduce that any fixed location on Earth will experience the cycle of two high tides and two low tides every day. Tidal range and exact times of high and low tides can be affected by the shape of coastlines and ocean basins, as well as by the additional gravitational effects of the Sun, particularly during spring and neap tides.