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.
high tides are high water level they are called spring tides and low tides are low water level they are called neap tides. high tides and low tides occur when the sun, earth a â¦ nd the moon are inline. Low tide is when the moon pulls the sea out further creating more  sand â¦ space.     High and low tides are caused by the positions of the Sun and Moon  relative to your position on the Earth's surface.