Wednesday, March 18, 2020

Oxbow Lakes - Information and Examples

Oxbow Lakes s Rivers flow across wide, river valleys and snake across flat plains, creating curves called meanders. When a river carves itself a new channel, some of these meanders get cut off, thus creating oxbow lakes that remain unconnected but adjacent to their parent river. How Does a River Make a Loop? Interestingly, once a river begins to curve, the stream begins to move more rapidly on the outside of the curve and more slowly on the inside of the curve. This then causes the water to cut and erode the outside of the curve and deposit the sediment on the inside of the curve. As the erosion and deposition continue, the curve becomes larger and more circular. The outer bank of the river where erosion takes place is known as the concave bank.   The name for the bank of the river on the inside of the curve, where sediment deposition takes place, is called the convex bank. Cutting off the Loop Eventually, the loop of the meander reaches a diameter of approximately five times the width of the stream and the river begins to cut the loop off by eroding the neck of the loop. Eventually, the river breaks through at a cutoff and forms a new, more efficient path. Sediment is then deposited on the loop side of the stream, cutting off the loop from the stream entirely. This results in a horseshoe-shaped lake that looks exactly like an abandoned river meander. Such lakes are called oxbow lakes because they look like the bow part of the yoke formerly used with teams of oxen. An Oxbow Lake Is Formed Oxbow lakes are still lakes, generally, no water flows in or out of oxbow lakes. They rely on local rainfall and, over time, can turn into swamps. Often, they ultimately evaporate in just a few years after having been cut off from the main river.   In Australia, oxbow lakes are called billabongs. Other names for oxbow lakes include  horseshoe lake, a loop lake, or cutoff lake.   The Meandering Mississippi River The Mississippi River is an excellent example of a meandering river that curves and winds as it flows across the Midwest United States toward the Gulf of Mexico. Take a look at a Google Map of Eagle Lake on the Mississippi-Louisiana border. It was once part of the Mississippi River and was known as Eagle Bend. Eventually, Eagle Bend became Eagle Lake when the oxbow lake was formed. Notice that the border between the two states used to follow the curve of the meander. Once the oxbow lake was formed, the meander in the state line was no longer needed; however, it remains as it was originally created, only now there is a piece of Louisiana on the east side of the Mississippi River. The length of the Mississippi River is actually shorter now than in the early nineteenth century because the U.S. government created their own cutoffs and oxbow lakes in order to improve navigation along the river. Carter Lake, Iowa Theres an interesting meander and oxbow lake situation for the city of Carter Lake, Iowa. This Google Map shows how the city of Carter Lake was cut off from the rest of Iowa when the channel of the Missouri River formed a new channel during a flood in March 1877, creating Carter Lake. Thus, the city of Carter Lake became the only city in Iowa west of the Missouri River. The case of Carter Lake made its way to the U.S. Supreme Court in the case Nebraska v. Iowa, 143 U.S. 359. The court ruled  in 1892 that while state boundaries along a river should generally follow the natural gradual changes of the river when a river makes an abrupt change, the original border remains.

Sunday, March 1, 2020

6 Brand New Ways to Use One English Worksheet to Nail Down Your Grammar Skills

6 Brand New Ways to Use One English Worksheet to Nail Down Your Grammar Skills 6 Brand New Ways to Use One English Worksheet to Nail Down Your Grammar Skills To be good at English, international students should work hard all the time because before going to an English speaking country, they need to learn the language first. Given this fact, their almost every English studying class passes with the help of worksheets. But what happens with these worksheets after the class? Students throw them away, as they do not see any reason to do the same task again It seems boring for them! But what if you can substitute a heap of worksheets with only one to gain different goals? Learning English as a second language becomes easier if you do it interactively. There are some ways to use an already analyzed card to train different skills and not to be bored with it. Let’s have a look at these interesting and, above all, useful ways to reuse one English worksheet to nail down your grammar skills. 1.  Ã‚   Extend the Sentence Here you use the material from the worksheet, but now your task is to extend sentences making them complex or compound without changing the tense. Completing such a task, you are practicing the particular grammar tense and, moreover, recollecting the material about complex and compound sentences. Thus, there is one more additional benefit of such a task. 2.  Ã‚   Assort Synonyms Once again, you use the same worksheet, but this time you read each sentence and mull over the synonyms to the main verb that could extend the sentence without changing its main idea. Completing this exercise, you are to use your word-stock to assort as many synonyms as possible. To motivate yourself more, do this task as a competition with your friend, who also wants to learn English. After such a contest the winner could be awarded, for example, with a tasty goodie. 3.  Ã‚   Make a Short Story Read every sentence and imagine a situation where this sentence would be suitable. Then, choose the sentence you like the most and tell a story you’d like to develop to your family members or friends. This particular task involves improving some skills: on the one hand, you improve your speaking skills using a fixed grammar tense, on the other hand you develop creativity and imagination that are also very important not only on grammar classes. 4.  Ã‚   Change the Type of the Sentence One more exercise can be devoted to the types of sentences. You have to   know three of them: affirmative, negative and interrogative. You read the written sentence and change it into other types. If the sentence is affirmative, the task is to make it negative and interrogative. If it is negative, you make it affirmative and interrogative. 5.  Ã‚   Change the Voice of the Sentence The voice in the English grammar is a tricky unit that should be practiced for a long time to be understood. You read a sentence, if it is used in active voice, make it passive, if it is in passive, make it active. 6.  Ã‚   Make a Themed Story It is perfect if there is a holiday in your area in the nearest time. But if it isn’t, you may choose any holiday you like. The task is to read all the sentences and unite them into a complex story about your favorite holiday. This task can also be organized as a competition with your friend, or a group mate. If your partner is from another county, you may tell about your national holidays, for example. The funniest story could land a prize. Thus, you can see that you mix up creativity, desire and an analyzed grammar worksheet, it is possible to â€Å"cook† a brand new task. Do not get sloppy! There is no need to peruse the internet or to submerge into the heap of books finding extra exercises to practice any grammar topic. Solution is nearer than you think. Enjoy your English classes! If you need certified writing assistance, we will easily write an English research paper for you, on any topic.