The pull of gravity of (choices: the moon only, the sun only, the moon and sun) causes Earth’s crust and oceans to bulge. This creates high and low tides. (choices: Spring, Neap, Seasonal) tides occur when the Sun, the moon, and Earth are nearly aligned. (choices: spring, neap, seasonal) tides happen when the Sun and the moon are at right angles to each other. Each of these special tides happens (choices: once, twice, four times) in a lunar cycle.