| A | B |
|---|
| tributaries | small streams join the flow of a river |
| delta | flat plains created by deposition of sediment at a river's mouth |
| canyon | deep, steep-walled gorge carved in rock by a stream or glacier |
| glaciers | water remaining frozen as snow or rivers of ice |
| flood plain | flat area paralleling sections of a stream |
| head of a river | beginning where run off cuts a channel and creates a river |
| mouth | water from stream enters lake or ocean |
| stream channel | the course along which water moves in a naturally flowing body of water |
| ground water | the water that soaks into the soil and seeps gradually downward |
| silt | mud deposited by water |
| gullying | continuous flow of water creates a ditch |
| run off | water that flows over the surface of the land |
