Why do rivers flow towards ocean?

1. Gravity: The primary driving force behind the flow of rivers is gravity. Water flows downhill, seeking a lower elevation. Oceans are at a lower elevation than the land, so rivers flow towards them.

2. Topography: The topography of the land also plays a significant role in determining the direction of river flow. Rivers typically form in mountainous areas, where the land is steep and water flows quickly downhill. As rivers flow downstream, they often merge with other rivers and gradually become wider and slower.

3. Earth's Rotation: The rotation of the Earth also has a slight influence on the flow of rivers. The Coriolis effect deflects moving objects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This deflection can cause rivers to curve slightly as they flow towards the ocean.

In summary, the flow of rivers towards the ocean is primarily driven by gravity, influenced by topography and the Earth's rotation.