Why and what makes high and low tides?
The daily tides of the oceans are caused by the gravitational pull of the moon. The height of the tides is governed by addtional factors such as local geography (i.e. shape of terrain, bay configuration, etc.), by the proximity of the moon to earth and the pull of the sun. Spring tides occur when the Sun’s pull is added to the moon’s and Neap tides when the Sun’s attraction partially cancels the moon’s.
