| A | B |
|---|
| tributary | any river that flows into another, larger river |
| lake effect | a weather condition where cold air blowing across a lake is warmed and picks up water |
| Equator | an imaginary line that lies halfway between the North Pole and the South Pole, at 0 latitude |
| ports | a place where ships load or unload their goods |
| climate | the pattern of weather of a certain place over many years |
| Prime Meridian | the line of longitude, marked 0 |
| till | the mixture of soil and rocks that covers much of Ohio, dropped there by a glacier |
| plateau | a high, flat area that rises steeply above the surrounding land |
| mouth | the place where a river empties into an ocean or another large body of water |
| source | the place where a river begins |
