| A | B |
|---|
| CONTINENTAL SHELF | LAND AT THE EDGE OF A CONTINENT THAT GENTLY SLOPES BENEATH THE OCEAN |
| TSUNAMI | A FAST MOVING WAVE STARTED BY AN EARTHQUAKE OR A VOLCANIC ERUPTION |
| TIDE | THE RISE AND FALL OF THE SURFACE OF THE SEA CAUSED BY THE PULL OF THE MOON'S AND SUN'S GRAVITY |
| CURRENT | A PART OF A LARGE BODY OF WATER THAT MOVES IN A PARTICULAR DIRECTION |
| SOURCE | THE PLACE WHERE A RIVER BEGINS |
| MOUTH | THE PLACE WHERE A RIVER FLOWS INTO A LARGER BODY OF WATER |
| TRIBUTARY | A RIVER OR STREAM THAT FLOWS INTO A LARGER RIVER OR STREAM |
| IRRIGATION | THE USE OF WATER FROM A RIVER OR WELL TO RAISE CROPS |
| CANAL | A WATERWAY DUG ACROSS LAND |
| ORE | ROCK THAT CONTAINS METALS SUCH AS IRON, COPPER, OR GOLD |
| PORT | A CITY WHERE SHIPS PICK UP AND DELIVER GOODS |
