Question

1. what causes tides to occur?

Explanation:

Tides are caused by the gravitational pull of the Moon and, to a lesser extent, the Sun on Earth's oceans. The Moon's gravitational force creates a bulge of water on the side of Earth facing the Moon and another bulge on the opposite side due to inertia. The Sun also contributes, and when the Sun, Moon, and Earth are aligned (during full or new moons), the combined gravitational pull causes higher tides (spring tides), while when they form a right angle (during quarter moons), the tides are lower (neap tides).

Answer:

Tides occur due to the gravitational pull of the Moon (and to a lesser extent the Sun) on Earth's oceans, creating water bulges and cyclic changes in sea levels.