Rivers give water for cattle and other animals to drink and for people to grow plants. Rivers give products that are useful to people such as fish for food, clay for bricks and reeds to make the roofs of houses. Rivers can be used for transporting people, crops and other goods by boat. Rivers can be used to give power to turn machinery such as water mills. Rivers give water for factories that make cloth, steel and many other products. Rivers sometimes have dams to hold the water for people to drink, or to make electricity. Rivers can be used for leisure and sports best such as swimming, boating, fishing and just walking by the river. Rivers often have beautiful scenery. Many painters, story-tellers and poets have painted or written about rivers.
Sometimes the underground water trickles or gushes out of the ground to form a small spring of water. In other places, where there are caves, the small underground streams run together to form a river. The river can sometimes run through deep wide underground caverns. While many underground rivers flow gently, some underground rivers flow fast and have rapids, particularly after heavy rain. Many underground rivers flow out through a cave mouth to become an ordinary river. Underground water flowing out of the katafygi vatsinidi caves, peloponnese, greece Exploring the ouysse river which flows from the vitarelles cave, france rapids on the kyzyl-Koba underground river in Crimea the river Styx runs out of the mammoth cave in Kentucky, us the water. It can usually be drunk safely by people unless it is too dirty because of mud or human pollution. People and animals need fresh water to drink, so they often live by the side of a river. Rivers give water for drinking, bathing and washing clothes.
Essay on autobiography of a river
Many kinds of fish, clams, molluscs and other sealife live at estuaries. Many of the world's largest cities and harbours are at estuaries. Where a river flows out to the sea, it sometimes flows very slowly through sandy or muddy land, making lots of little islands as it flows. The main stream of the river gets broken into many parts that spread out into a triangle shape like the Greek letter delta. When this happens, it is called the delta of the river. Deltas are often places that are not good for towns or farms but are very good for birds and other wildlife and fishing. Deltas are often made into wildlife reserves.
Not all rivers have deltas. There are famous deltas on the nile river, the Amazon river, the mekong river, the mississippi river and the danube river. The nowitna paper is an old river with meanders and ox-bow lakes. The delta of the ganges river in India the grassy islands of the okavango delta are the home of elephants, lions and flamingos. Cities are often near the mouth of a river. Underground rivers change change source some rivers flow underground through caves. Underground rivers form in places where there are lots of cracks in the rocks above, so odyssey that in rainy weather, the water runs downs and collects in small underground streams.
As it flows over the flat land the river becomes wider and slower. A wide slow river is called an 'old river'. An old river often floods across the land after there is lots of rain at the headwaters. An old river slowly builds up its banks on either side; the high banks are called levees. An old river often meanders (twists and turns and sometimes, after a flood, it leaves lakes behind which are called ox-bows or billabongs.
Old rivers are the most useful type of river for growing crops. Corn, rice, fruit, cotton, hay, tobacco and sugar are some of the crops that are grown near old rivers. The shape of the mouth depends on the conditions of the sea where it flows. If there is a strong tide where the river meets the sea, the river forms an estuary. An estuary is a wide, funnel -like mouth of the river. The fresh water of the river mixes slowly with the salt water, becoming brackish water somewhat salty water.
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Clearwater river in Alberta is a "mature river". The add severn river flowing through farmland. The Rhine river valley has many towns. The city of Florence was built beside the Arno river. The last part of a river change change source a river usually ends by flowing into an ocean, hippie a lake or a bigger river. The place where the river flows out into a bigger body of water is called the 'mouth' of the river. As a river flows towards its mouth, the countryside around the river often changes from hilly to flat.
The middle part of a river change change source the middle part of a river is called a mature river. A mature river makes a riverbed that is U-shaped. It might be very deep and run fast. It sweeps over small rocks and boulders, and makes big turns around billing hills and mountains. It is much wider than a young river, but not as wide as an old river. To cross over a mature river, people use bridges. Many cities and towns are built on the banks of mature rivers. Many farms that keep animals such as dairy cows, horses and sheep are along mature rivers because the animals can drink from the river every day.
small stream that runs down the mountain. As more little streams run in, the main stream gets bigger, until it forms a river. Some rivers flow from hills where there is no snow, but lots of rain. Some rivers only flow after there has been rain near the head water. The headwaters of the Arkansas river have rapids. The soča river begins in the mountains of Slovenia. Waterfalls are most often found in a young river. This river in Northern Australia only runs after heavy rain.
Both people and animals often live near rivers. They need water to survive and, for humans, rivers were once the only means of fast transport. Contents, the beginning of a river change change source, the start of a river is called the source or head water. The part of the river that is near the source is called a 'young' river. 1, a young river is often in a v-shaped river bed, and flows quickly downhill over stones, and around big rocks. Young rivers often have lots of small waterfalls and rapids. As the rivers travel downhill they begin to erode essay the ground taking small bits of soft rock and soil. The source of a river may be a spring, often on a hill, mountain, glacier, or another high place. A spring is water that flows out from under the ground.
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The river, thames in London, England. People have lived along the banks of this river for thousands of years. A river is a stream of water that flows through a channel in the surface of the ground. The passage where the river flows is called the river bed and the earth on each side is called a river bank. A river begins on high ground or in hills or mountains and flows down from the high ground to the lower ground, because of gravity. A river begins as a small stream, and gets bigger the farther it flows. The water in a river is called fresh water. It comes from rain or snow and it can usually be drunk safely, unless it has been polluted. The water in a sea cannot add be drunk safely because it is salt water.