The tides are caused mainly by the gravitational pull of the moon. The sun exerts a weaker influence. When the moon and sun’s gravitational pulls line up they produce especially high and low tides, called spring tides. When they are at right angles they cancel each other out, resulting in a low tidal variation known as neap tides.
Te whakamahi i tēnei tūemi
Te Ara - The Encyclopedia of New Zealand
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.