| A | B |
|---|
| Layer of permeable containing water | aquifer |
| The top of the saturated zone of groundwater | water table |
| The movement of water between the earth and the atmosphere and back to earth is called the ___. | water cycle |
| Runoff water forms ___. | streams |
| Water falling to Earth is called ___. | precipitation |
| Water vapor changing back into liquid in Earth's atmosphere is called ___. | condensation |
| Heat from the sun causes ___ of water. | evaporation |
| Water that flows across the surface of the Earth is called ___. | runoff |
| The land area from which a steam gets its water is a ___. | drainage basin or watershed |
| This river drains the largest area of the U.S. | Mississippi |
| When the water table comes to the surface of the ground, a ___ forms. | spring |
| The low, flat part of a valley | floodplain |
| Calcite formation rising up from the floor of a cave. | stalagmite |
| A curve in a stream's channel | meander |
| Underground opening found in limestone | cave |
| Calcite formation hanging from the ceiling of a cave | stalactite |
| Heated underground water reaches the surface | hot spring |
| Water forced to the surface by pressure | artesian well |
| Limestone is dissolved by this chemical. | carbonic acid |
| Underground rock layer filled with water. | zone of saturation |
| What age is a river with steep sides? | young |
| What age is a river with meanders beginning to form? | mature |
| What age is a river with water rapids and waterfalls? | young |
| What age is a river that flows very slowly and has a broad floodplain? | old |
| Stream is fast moving and fairly straight in its direction. | young |
| Water particles of ocean waves move ___. | in a circle |
| When an ocean wave reaches the beach its wave height ___. | increases |
| When the Sun, Earth, and Moon are in a straight line, the tide will be ___. | a spring tide or highest |
| What force is most responsible for tides? | gravitational force or gravity |
| The horizontal distance from wave crest to wave crest is called ___. | wavelength |
| Surface currents are caused by ___. | the wind |
| The lowest point in a wave is the ___. | trough |
| Differences in temperature or salinity can cause ___ currents. | density |
| What force causes water to move in the same direction as the wind blowing over it? | friction |
| When a stalactite and a stalagmite join, a ___ is formed. | column |
| Throughout the world, the salinity of ocean water remains at about ___ %. | 3.5 |
| The amount of salt dissolved in ocean water is referred to as ___. | salinity |
| A surface current that flows northward along the east coast of the U.S. | Gulf Stream |
| The Coriolis effect is caused by ___. | Earth's rotation |
| The vertical distance of a wave from its crest to its trough is ___. | wave height |
