Sudden changes in these phenomena can result from seiches created by raising or lowering of atmospheric pressure. A sudden increase in them can be caused by propagation of a bore. During still periods, they are known as slack. Increased speeds are seen in their Perigean variety. Stronger and weaker 
Sudden changes in these phenomena can result from seiches created by raising or lowering of atmospheric pressure. A sudden increase in them can be caused by propagation of a bore. During still periods, they are known as slack. Increased speeds are seen in their Perigean variety. Stronger and weaker versions of these phenomena are called spring and neap, respectively. One zone created by changes in them is called the littoral zone. For 10 points, name these phenomena caused by the Sun's and the Moon's gravitational forces on the Earth's oceans: changes in height of a body of water.
Sudden changes in these phenomena can result from seiches created by raising or lowering of atmospheric pressure.
tides