A river starts on high ground, usually in hills or mountains, where water collects and flows together to form streams. When many streams come together, they are called a river. The place where the river starts is called ... More »

The Nile River's most distant source is the Kagera River in Burundi and it empties into the Mediterranean Sea in northern Egypt. The Nile River is considered the longest river in the world at about 4,180 miles or 6,695 k... More »

www.reference.com Geography Bodies of Water

The Ob River starts just south of the Russian city of Biysk in Altai Krai, and it ends when it empties into the Kara Sea. The Ob flows north and west across western Siberia, gaining sources from the Altai Mountains. More »

Physical features in geography include bodies of water and landforms, for example, oceans, mountains, lakes, rivers, plateaus, plains, streams, hills, bays, gulfs, volcanoes, canyons, valleys and peninsulas are all vario... More »

The Minnesota Department of Natural Resources explains that there is no official distinction between streams and rivers, but streams are commonly held to be smaller bodies of water that feed into larger bodies, namely ri... More »

Tropical rain forest terrain varies from gentle hills to rugged mountains depending on the location. For instance, the Amazon has some very mountainous terrain while the rain forests in Queensland, Australia, lie on upla... More »

Ocean water is salty primarily due to the large amounts of chloride and sodium on land which are dissolved by rainfall and carried to the sea by rivers and streams. Hydrothermal vents and underwater volcanoes located on ... More »