| A | B |
|---|
| glacier | large mass of moving ice and snow |
| load | soil particles and rock materials carried by a stream |
| drainage system | network of rill, gullies, streams, and rivers in an area |
| tributary | larger stream that flows into a main river |
| drainage basin | area drained by a main river and its channels |
| immature river | river in early stage of development |
| mature river | river that has been developing for many thousands years |
| oxbow lake | formed when a loop formed by the curving and winding of a river is cut off from the rest of the river |
| meanders | loops formed by the curving and winding of a river |
| alluvial fan | forms when a river leaves the mountains and runs out onto a plain, dropping much of its sediment |
| delta | large amounts of sediments deposited at the mouth of a large river |
| flood plains | flat area that form on both sides of a mature river or stream |
| levee | a ridgelike deposit formed from larger particles deposited on the sides of a river |
| till | rocks and debris deposited directly by a glacier |
| moraine | ridge formed when a glacier melts and retreats |
| drumlin | oval-shaped mound of dirt |
| meltwater stream | streams formed by melting ice when a valley glacier stops advancing |
| outwash plain | areas formed from sediments deposited by rivers of melting ice from a glacier |
| iceberg | part of a glacier that breaks off and drifts out to sea |
| kettle lake | lake formed from a hole in the ground caused by a block of glacial ice |
