Answer:
In both cases, the gravitational pull of the sun is 'added' to the gravitational pull of the moon on Earth, causing the oceans to bulge a bit more than usual. This means that high tides are higher and low tides are lower than average. These are called 'spring tides.
Explanation:
Fun facts:
Why are the spring tides the highest tides each month? Twice each month, the moon, sun, and Earth are aligned, so the pulling forces are combined to produce the highest and lowest tides, called spring tides.