Play OC.6a Vocabulary

The time at which the tide reaches its highest level.

The time at which the tide reaches its lowest level.

The difference in height between consecutive high and low tides.

The time of greatest variation between high and low tides occurring when Earth, moon, and sun form a straight line.

The time of smallest variation between high and low tides, occurring when the Earth, moon, and sun align at right angles.

A “no-tide” point in the middle of a body of water from which tide crests rotate outward. Sometimes called a node.

A tidal cycle of two high tides and two low tides each lunar day, with the high tides of nearly equal height.

A tidal cycle of one high tide and one low tide per day.

A complex tidal cycle, usually with two high tides and two low tides of unequal height per day.

The rise of fall in sea level causes water to flow in and out of bays and harbors.