DEFINITION of 'Actuarial Science '. A discipline that assesses financial risks in the insurance and finance fields using mathematical and statistical methods. Actuarial science applies the mathematics of probability and statistics to define, analyze and solve the financial implications of uncertain future events. Traditional actuarial science largely revolves around the analysis of mortality and the production of life tables, and the application of compound interest. Next Up.
The result is a smaller difference between high and low tides and is known as a neap tide. Neap tides are especially weak tides. They occur when the gravitational forces of the Moon and the Sun are perpendicular to one another (with respect to the Earth). Neap tides occur during quarter moons.
Tides are caused by the gravitational pull of the moon and sun. The tide itself is actually a huge wave with an extremely long wavelength. The wavelength is so long that it is only easily observed in the ocean because of it's size. Tides do occur in lakes and ponds they just aren't noticible. Seas and Oceans have space which air can flow freely without stopped by any objects where as in lake or pond ,the water is less and not that much air flow freely. So the air makes large waves in seas and oceans than the lakes and ponds.