Step-by-step explanation:
The definition of a spring tide is a flood or rising of water especially during a new or full moon. ... A tide in which the difference between high and low tide is the greatest. Spring tides occur when the Moon is either new or full, and the Sun, the Moon, and the Earth are aligned.
Waves are additive so when the gravitational pull of both bodies is in the same direction the high tides add and the low tides add (Figure below). Highs are higher and lows are lower than at other times through the month. These more extreme tides, with a greater tidal range, are called spring tides.