Question

1. what causes the tides on earth?

Explanation:

Earth's tides are primarily driven by the gravitational pull exerted by the Moon, with a secondary, smaller contribution from the Sun's gravity. The uneven gravitational force across Earth's surface creates tidal bulges on the sides facing toward and away from the Moon (and Sun), which result in the periodic rise and fall of ocean levels we observe as tides.

Answer:

Earth's tides are mainly caused by the gravitational pull of the Moon, with a smaller additional effect from the gravitational pull of the Sun. The uneven gravitational force across Earth's surface creates tidal bulges, leading to the periodic rise and fall of ocean water levels.