2006-12-10 11:58:51 · 4 answers · asked by orprice 1 in Science & Mathematics ➔ Geography
OK!
Those round fields you see from the air are a result of irrigation. Huge above-ground watering systems work by pivoting like a long arm attached to a central pivot. The result is that the watered area is a circle with a radius as long as the irrigating arm.
See:
http://en.wikipedia.org/wiki/Irrigation
2006-12-10 12:02:43 · answer #1 · answered by Jerry P 6 · 1⤊ 0⤋
Fields are often round now due to the use of center pivot sprinklers. The sprinkler goes from the center to the edge of the circle (the radius). As it waters, it pivots around the center to water the whole circle. You can see numerous photos if you do a quick search of "center pivot sprinklers" in google images to see what the sprinklers and fields look like.
2006-12-10 12:07:03 · answer #2 · answered by dana 2 · 1⤊ 0⤋
Round fields are usually due to a particular kind of irrigation system, one that rotates around a central pipe that feeds the water into the sprinkler pipe which rotates around like the hands on a clock.
2006-12-10 12:04:11 · answer #3 · answered by Bears 2 · 2⤊ 0⤋
the fields are irrigated by a pumping system with sprinklers called circles.....common in the west.....
2006-12-10 12:05:59 · answer #4 · answered by Anonymous · 1⤊ 0⤋