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8 Sci Freshwater
8th grade Science Freshwater Vocabulary
Question | Answer |
---|---|
RUNOFF | WATER THAT DOESN'T SOAK INTO THE GROUND OR EVAPORATE BUT INSTEAD FLOWS ACROSS EARTH'S SURFACE. |
RILL EROSION | TYPE OF SURFACE WATER EROSION CAUSED BY RUNOFF, IN WHICH A SMALL STREAM FORMS DURING A HEAVY RAIN, CARRIES AWAY PLANTS AND SOIL, AND LEAVES A SCAR OR CHANNEL ON THE SIDE OF THE SLOPE. |
GULLY EROSION | TYPE OF SURFACE WATER EROSION DUE TO RUNOFF THAT OCCURS WHEN A RILL CHANNEL BECOMES BROADER AND DEEPER. |
SHEET EROSION | TYPE OF SURFACE WATER EROSION DUE TO RUNOFF, IN WHICH RAINWATER FLOWING INTO LOWER ELEVATIONS LOSES ENERGY AND LEAVES BEHIND SEDIMENTS THAT COVER THE SOIL LIKE A SHEET. |
DRAINAGE BASIN | LAND AREA FROM WHICH A STREAM GETS ITS WATER. |
MEANDER | CURVE IN THE SIDE OF A STREAM FORMED BY A FAST-MOVING CHANNEL OF DEEP WATER. |
FLOODPLAIN | BROAD, FLAT VALLEY FLOOR CARVED BY A MEANDERING STREAM; OFTEN BECOMES COVERED BY WATER WHEN A STREAM FLOODS. |
STREAM | BODY OF WATER THAT HAS A CURRENT. |
CONFLUENCE | TWO STREAMS THAT COME TOGETHER. |
GROUNDWATER | WATER THAT SOAKS INTO THE GROUND AND COLLECTS IN THE SMALL SPACES BETWEEN BITS OF ROCK AND SOIL. |
PERMEABLE | DESCRIBES ROCK AND SOIL THAT HAVE CONNECTING PORE SPACES THROUGH WHICH WATER CAN PASS. |
IMPERMEABLE | MATERIAL THOUGH WHICH WATER CANNOT PASS. |
AQUIFER | LAYER OF PERMEABLE ROCK THAT ALLOWS WATER TO MOVE FREELY. |
WATER TABLE | UPPER SURFACE OF THE ZONE OF SATURATION, WHICH IS THE AREA WHERE ALL THE PORES IN THE ROCK ARE FILLED WITH WATER. |
SPRING | POINT WHERE THE WATER TABLE MEETS EARTH'S SURFACE AND WATER FLOWS OUT. |
GEYSER | HOT SPRING THAT ERUPTS PERIODICALLY AND SHOOTS STEAM AND WATER INTO THE AIR. |
CAVE | UNDERGROUND OPENING THAT IS FORMED WHEN ACIDIC GROUNDWATER MOVES THROUGH CRACKS IN LIMESTONE AND DISSOLVES THE ROCK. |
TRIBUTARY | THE SMALLER OF TWO STREAMS MEETING AT A CONFLUENCE. |
ESTUARY | THE MIXTURE OF FRESHWATER AND SALTWATER WHERE A RIVER MEETS THE OCEAN. |
POND | SMALL BODY OF FRESH WATER THAT USUALLY HAS NO OUTLET AND IS FED BY UNDERGROUND SPRINGS. |
LAKE | BODY OF FRESH WATER THAT USUALLY HAS A DRAINAGE STREAM OR RIVER. |