| precipitation | rain,snow,hail and sleet |
| source | the start of a river |
| tributary | a small river |
| velocity | the speed of a river |
| waterfall | a vertical drop in a river |
| watershed | an imaginary line around a drainage baisin |
| abrasion | when rocks in a river hit the banks and beds of the river like sand paper |
| attrition | when rocks in a river hit and grind against each other and get smaller and smoother |
| confluence | when two or more rivers join/meet |
| gradient | steepness/slope |
| drainage baisin | the land that is drained by a river and its tributarys |
| traction | when large boulders roll along a rivers bed |
| sediment | a rivers bedload/ rocks and pebbles moved by a river |
| bedload | the material in a river e.g rocks and stone |
| banks | sides of a river |
| deposition | when a river loses its energy and drops what its carrying |
| meander | a river with lots of bends and curves |
| run-off | an area of land/surface that water flows on e.g.
down a mountain |
| hydrological cycle | another word for water cycle: the movement of water between air land and seas |
| ox bow lakes | a horse shaped lake |
| bed | the bottom of a river |
| flood-plain | the land around river that may be flooded |
| erosion | the wearing away and breaking down of rocks e.g. attrition |
| SUSpention | small light materials that float along the river |
| who is the coolest person alive | aly ofc |
