| A | B |
| fall line | a place where land drops sharp causing rivers to form waterfalls or rapids |
| drainage basin | land drained by a river system |
| tributary | a stream or river that flows into a larger stream or river |
| sound | a long inlet parallel to the coast |
| inlet | an area of water extending into the land from a larger body of water |
| tide | the regular rise and fall of an ocean and of the bodies of water connected to it |
| current | the part of a body of water flowing in a regular direction |
| #22 | Do You Knowsams? |