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They usually follow territorial borders. for example state borders or country border. If they were completely straight you might end up living in a different time zone as someone in another part of town.
Business closing times are a major consideration. The split between zones works out better if its done in non populous areas.
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoSince the earth is spherical, the equator could touch the earth at only one point
if it were straight.
The equator must curve in order to follow the spherical surface of the globe.
Wiki User
∙ 15y agoto tell us were the center of the earth is
Wiki User
∙ 14y agonooooooooooooooooooooooooooooooooo!!!!!!!!!!!!!
Wiki User
∙ 15y agoWaters make their own way!
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What rivers lakes or oceans does Tennessee border?
Mississippi River The Northern and Southern borders are straight lines of Longitude and the East border is a irregular line that follows the mountains.
What way of describing location is being used when a geographer explains that a river is 250 miles north of San Antonio?
Cardinal directions or which route to take.as the crow flies or straight away
Why does river straightening reduce flood risk?
Straightening of river reduces floods in the immediate area because it allows the water to go straight instead of having to turn through curves. A natural meandering river has a curvy or sinusoidal shape to its path. A straight river would travel only a kilometer per kilometer of valley floor. Water associated with a curvy river will have to follow the natural sinusoidal curves and will travel considerably more distance per kilometer of valley floor. Also, water in a natural river will have a slower velocity because the course of the river is altered with every curve. A straight river sheds water faster from the immediate area because it has less distance to travel and is not slowed by the curves, however the straightening a river is associated with negative consequences including increased risk of flooding downstream and increased erosion. Increasing the velocity causes more erosion. If a river is straight then erosion digs the river into a deeper and deeper channel. A curvy river is typically has a slower velocity and erodes less. Also the erosion in a curvy river is associated with the 'cut bank' or outside of each curve not with a deepening channel as seen in straightened rivers. If you imagine yourself as a water molecule traveling down the river when you arrive at the outside of a curve your inertia will cause you to run into the 'cut bank' until the outer bank slows your speed and alters your course. You may have caused a slight bit of erosion but because you keep hitting curves you can not build up the speed needed to induce much erosion. After eroding from the "cut bank" sediment is often deposited in the 'point bar' or inside of the next curve. This causes the curves to slowly meander sometimes leaving 'ox bows' or multiple channels. Building roads or structures in these meandering curves is unwise as inevitably erosion will destroy the structure. The fast moving waters of a straight river can carry far more sediments down stream because of the increased velocity. Straightened streams often had to be lined with concrete or 'rip rap' where the original curvy river did not because the high velocity induced severe deepening of streams and both banks would then collapse in. Straitened rivers increase the risk of flooding downstream. A straight river or stream holds less water per distance unit of valley floor than a natural and curvy river. In a rain event a natural curvy river will hold more water. Also, since it is not slowed by the curves of a natural river, a straight river will shed what little water it holds faster. This is exacerbated by the draining of wetlands upstream and the tiling of agricultural lands to shed standing water. Wetlands and intermittent pools act as large sponges, holding and delivering rain and snow-melt slowly to downstream rivers. Furthermore, the loss of flood planes by building levies causes rivers to rise higher during flood events and again delivers more water downstream in a short amount of time. Floods downstream have become more 'flashy' and acute because of straightening of rivers, building of levies and draining of wetlands. A rain event in the Midwest of North America prior to European settlement would have induced far less of a flood height down stream than the same rain event would cause today. This is because the water would be delivered to downstream locations slowly over a greater duration of time.
How many rivers in the Philippines?
look it up yourself instead of asking other people to find it out for you, lazy sh,it,s
Three tributaries of the Mississippi river?
Due to its great length, there are many tributaries of the Mississippi River. Five of these tributaries are the St. Croix River, the Missouri River, the Ohio River, the Rock River, and the White River.
Why doesn't a river flow in a straight line?
No natural river flows in a straight line.
Why doesn't the Colorado River flow in a straight line?
No natural river flows in a straight line.
Is the snake river straight?
No, that is why it is called the snake river; generally speaking the river has a lot of bends.
What is the name of the river that connects lake toba to the straight of malacca?
The Ashan River
A straight river made by man?
Canal
Why don't river run straight?
because there are obstacles
What does it mean if a river meanders?
a river meandering means that it bends and winds instead of going straight.
How much do rivers on Farm town cost?
straight river = $1000.00 curved river = $1500.00
How many miles is 277 river miles?
277 miles on the river, as opposed to a straight line or by road.
What river borders the southern part of Illinois?
straight across
A contour line that crosses a river makes a?
straight line
Why do you think the border between California and Arizona is not a straight line.?
The Colorado River separates it.
