| A | B |
|---|
| RIVER WINDS BACK AND FORTH | MEANDERS |
| WATERSHEDS OUTERMOST LIMIT | BOUNDARY |
| PRIMARY CHANNEL OF A RIVER | MAIN RIVER |
| SMALL STREAM THAT JOINS A RIVER | TRIBUTARY |
| LOY LYING AREAS SATURATED WITH WATER | WETLANDS |
| MAY BE UNDER WATER IF A RIVER OVERFLOWS | FLOODPLAIN |
| DIRECTION A RIVER FLOWS | DOWNSTREAM |
| WIDEST PART OF THE RIVER | RIVER MOUTH |
| DIRECTION OF A RIVER SOURCE | UPSTREAM |
| BEGINNING OF A RIVER | RIVER SOURCE |
| SMALL FLOWING BODY OF WATER | CREEK |
| LARGE FLOWING BODY OF WATER | RIVER |
| LARGE INLAND BODY OF WATER | LAKE |
| AREA WHERE FRESH AND SALT WATER MEET | ESTUARY |
| SMALL INLAND BODY OF WATER | POND |
| MIXTURE OF FRESH AND SALT WATER | BRACKISH |
| 3% OF EARTH'S WATER | FRESH |
| CAUSES WATER TO BECOME UNCLEAN OR IMPURE | POLLUTANT |
| POLLUTION SOURCE EASILY IDENTIFIED | POINT SOURCE |
| 97% OF WATER ON EARTH | SALT |
| SOURCE OF ALL WATER ON EARTH | PRECIPITATION |
| GAS TO A LIQUID | CONDENSATION |
