What term describes the origin point of a river, where its flow begins?

What term describes the origin point of a river, where its flow begins?

• A. Mouth
• B. Delta
• C. Confluence
• D. Source

Answer: (D)

The origin point of a river, where its flow begins, is called the source. This is the starting point of the river, often located at high elevation and fed by springs, melting snow or ice, or rainfall that collects into a small starting stream known as the headwaters. As water gathers and channels down, the river grows and continues downstream toward its mouth, where it empties into a larger body of water. The mouth is the end of the river, not its start, and a delta can form there as sediment spreads out at the mouth. A confluence is simply where two streams join to form a larger river. So the term describing the origin is the source.

The origin point of a river, where its flow begins, is called the source. This is the starting point of the river, often located at high elevation and fed by springs, melting snow or ice, or rainfall that collects into a small starting stream known as the headwaters. As water gathers and channels down, the river grows and continues downstream toward its mouth, where it empties into a larger body of water. The mouth is the end of the river, not its start, and a delta can form there as sediment spreads out at the mouth. A confluence is simply where two streams join to form a larger river. So the term describing the origin is the source.