WES D

When my partner and I did the WES D project we had some prior knowledge about the coriolis effect. In the WES D project we learned about the coriolis effect.The Coriolis effect is most apparent in the path of an object moving longitudinally. On the earth an object that moves along a north and south path, or longitudinal line, will undergo apparent deflection to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. There are two reasons for this: first, the earth rotates eastward; and second, the tangential velocity of a point on the earth is a function of latitude (the velocity is essentially zero at the poles and it attains a maximum value at the Equator). So if a cannon was fired northward from a point on the Equator, the projectile would land to the east of its due north path. This occurs because the projectile is moving eastward faster at the equator than was its target farther north.

http://abyss.uoregon.edu/~js/glossary/coriolis_effect.html