Discuss the origin of tides. Illustrate the formation of Spring Tides.
The tides have their origin in the gravitational forces of the sun and the moon. The earth rotates from west to east and revolves around the sun following an elliptical orbit. Similarly, the moon rotates from west to east and revolves around the earth along an elliptical orbit.
Spring Tides: Very high tides are caused when the sun and the moon and the earth are almost in the same line. Such high tides are called Spring Tides. The gravitational forces of the sun and the moon work together with combined force and thus a high tide is caused. The height of such Spring Tides is 20 percent more than that of the normal tides. Such tides take place twice every month (during the full moon and the new moon) and their timing is fixed.
Full moon and new moon and high tide