Groundwater Crossword Puzzle

QUESTIONS LIST:

• groundwater : water that collects underground.
• cave : a large naturally hollowed-out space in or above the ground.
• porosity : the percentage of pore space in a material.
• permeability : the ability of a material to let water pass through it.
• zone of saturation : a zone where groundwater fills all of the underground pore spaces.
• well : a deep hole dug or frilled to reach the water table.
• spring : a natural opening in the ground through which groundwater floss to earth's surface.
• sinkhole : when the water table is lower than the level of a cave, the top of the cave is no longer supported by water underneath.
• water table : the upper boundary of the zone of saturation.
• zone of aeration : a zone above the zone of saturation where pore spaces are moist but are filled mostly with air.
• recharge : precipitation and runoff that replaces the groundwater removed by a well.
• impermeable : materials that do not allow water to pass through them.
• hot spring : springs that produce water with temperatures higher than that of the human body.
• stalagmites : calcium carbonate in the water drops that forms cone-shaped features.
• geyser : a hot spring that shoots steam and water vapor into the air at regular intervals.
• aquifer : a rock layer that stores and allows the flow of groundwater .