THE EARTH
PHYSICAL GEOGRAPHY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Wells dug by artisans
|
|
|
Wells bored to reach underground water which is lifted by any device
|
|
|
They are not wells at all but craters formed on the moon
|
|
|
None of the above
|
Detailed explanation-1: -artesian well, well from which water flows under natural pressure without pumping. It is dug or drilled wherever a gently dipping, permeable rock layer (such as sandstone) receives water along its outcrop at a level higher than the level of the surface of the ground at the well site.
Detailed explanation-2: -Artesian water is the confined natural underground reservoir that contains water under positive pressure. The aquifer is the geologic layer of rocks or limestone that provides the source of the artesian well. Such aquifers are commonly found underneath the surface of the earth.
Detailed explanation-3: -The word artesian comes from the town of Artois in France, the old Roman city of Artesium, where the best known flowing artesian wells were drilled in the Middle Ages. The level to which water will rise in tightly cased wells in artesian aquifers is called the potentiometric surface.