Tidal Power
Technology is available to exploit the potential energy formed by tides for the generation of electrical energy. The basic structure is a barrage or dam built across a river estuary or at the mouth of a bay. This dam is similar to that used in hydroelectric power plants built across flowing rivers. At regular intervals along the dam, gates and turbines are installed. When the tide is rising, the gates are opened. This allows water to flow into the area behind the barrage, raising the water level there. When the water has reached its highest level, the gates are closed. Then the tide drops on the seaward side, and this trapped water is several meters above the sea level. The gates are then opened, allowing the water to discharge out. The force of the flow turns the turbines and generates electricity. It is also possible to use tidal energy when the water flows in the other direction - through the gates into the estuary from the sea.
In this way, four periods of energy production are possible every day, since coastal regions experience two high and two low tides in just over 24 hours. In order for practical amounts of electricity to be generated, the difference between high and low tides must be at least five meters. Tidal power is renewable, non-polluting, and contributes no greenhouse gases to the atmosphere. This kind of system can provide a useful energy supplement to other sources in an era of diminishing fossil fuel reserves.
As tidal power is important, there are also many drawbacks for the tidal power. If advantages are more than disadvantages then we have to use tidal power. Advantages are we can get power from natural resources and drawbacks are environmental impact and economy degrade.
Firstly, tidal power is known as an alternative energy solution. But, in that we can never produce power more than standard. By this water quality changes. Water with higher salinity comes more. In this water mud and other sediments are also there that are very harmful to fishes and birds. It causes paralysis in shellfishes. Water animals migrate from sea water to fresh water but because of low salinity in fresh water. it may be hard to live in fresh water. Provision for fishes and birds are very expensive so that we won't be able to make such provision for them.
Secondly, Main occupation near sea villagers is fishing. In order to generate tidal power, there are many negative effects on fishing boats and peoples. It indirectly affects the economy of a country. So that building dams and barrage are not a feasible to generate tidal power.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2017-07-09 | Aayushi | 73 | view |
| 2017-07-09 | akashdesai | 73 | view |
| 2016-12-27 | kantanandana | 73 | view |
| 2016-10-04 | nupur26796 | 60 | view |
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Grammar and spelling errors:
Line 1, column 81, Rule ID: SENTENCE_FRAGMENT[1]
Message: “If” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
...lso many drawbacks for the tidal power. If advantages are more than disadvantages ...
^^
Line 3, column 425, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: It
...ecause of low salinity in fresh water. it may be hard to live in fresh water. Pro...
^^
Discourse Markers used:
['also', 'but', 'first', 'firstly', 'if', 'may', 'second', 'secondly', 'so', 'then']
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance in Part of Speech:
Nouns: 0.268867924528 0.261695866417 103% => OK
Verbs: 0.141509433962 0.158904122519 89% => OK
Adjectives: 0.127358490566 0.0723426182421 176% => OK
Adverbs: 0.0566037735849 0.0435111971325 130% => OK
Pronouns: 0.0377358490566 0.0277247811725 136% => OK
Prepositions: 0.127358490566 0.128828473217 99% => OK
Participles: 0.0141509433962 0.0370669169778 38% => Some participles wanted.
Conjunctions: 2.52100628952 2.5805825403 98% => OK
Infinitives: 0.0330188679245 0.0208969081088 158% => OK
Particles: 0.0 0.00154638098197 0% => OK
Determiners: 0.0377358490566 0.128158765124 29% => Some determiners wanted.
Modal_auxiliary: 0.0141509433962 0.0158828679856 89% => OK
WH_determiners: 0.0 0.0114777025283 0% => OK
Vocabulary words and sentences:
No of characters: 1124.0 1645.83664459 68% => OK
No of words: 191.0 271.125827815 70% => More content wanted.
Chars per words: 5.88481675393 6.08160592843 97% => OK
Fourth root words length: 3.71756304063 4.04852973271 92% => OK
words length more than 5 chars: 0.314136125654 0.374372842146 84% => OK
words length more than 6 chars: 0.246073298429 0.287516216867 86% => OK
words length more than 7 chars: 0.178010471204 0.187439937562 95% => OK
words length more than 8 chars: 0.109947643979 0.113142543107 97% => OK
Word Length SD: 2.52100628952 2.5805825403 98% => OK
Unique words: 112.0 145.348785872 77% => More unique words wanted.
Unique words percentage: 0.586387434555 0.539623497131 109% => OK
Word variations: 54.2654793792 53.8517498576 101% => OK
How many sentences: 16.0 13.0529801325 123% => OK
Sentence length: 11.9375 21.7502111507 55% => OK
Sentence length SD: 26.2056172413 49.3711431718 53% => OK
Chars per sentence: 70.25 132.220823453 53% => OK
Words per sentence: 11.9375 21.7502111507 55% => OK
Discourse Markers: 0.625 0.878197800319 71% => OK
Paragraphs: 3.0 4.09492273731 73% => OK
Language errors: 2.0 3.39072847682 59% => OK
Readability: 36.5448298429 50.5018328374 72% => OK
Elegance: 1.74 1.90840788429 91% => OK
Coherence and Cohesion:
Essay topic to essay body coherence: 0.186371636555 0.549887131256 34% => OK
Sentence sentence coherence: 0.0830655964632 0.142949733639 58% => OK
Sentence sentence coherence SD: 0.0964977148468 0.0787303798458 123% => OK
Sentence paragraph coherence: 0.434436441013 0.631733273073 69% => OK
Sentence paragraph coherence SD: 0.166144730702 0.139662658121 119% => OK
Sentence topic coherence: 0.070375795565 0.266732575781 26% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0474891058536 0.103435571967 46% => OK
Paragraph paragraph coherence: 0.226033514239 0.414875509568 54% => OK
Paragraph paragraph coherence SD: 0.00438599116787 0.0530846634433 8% => Paragraphs are so close to each other.
Paragraph topic coherence: 0.137028124724 0.40443939384 34% => OK
Paragraph topic coherence SD: 0.0303352388918 0.0528353158467 57% => The ideas may be duplicated in paragraphs.
Task Achievement:
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => OK
Sentences with neutral sentiment: 9.0 4.26048565121 211% => Less neutral sentences wanted.
Positive topic words: 2.0 3.49668874172 57% => OK
Negative topic words: 1.0 3.62251655629 28% => More negative topic words wanted.
Neutral topic words: 1.0 3.1766004415 31% => OK
Total topic words: 4.0 10.2958057395 39% => More topic words wanted.
What are sentences with positive/Negative/neutral sentiment?
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Not in a correct format.
The correct pattern:
para 1: introduction
para 2: doubt 1
para 3: doubt 2
para 4: doubt 3
Less contents wanted from the reading passages(25%) but more content wanted from the lecture (75%).
Don't need a conclusion paragraph.
Read sample essays from ETS:
http://www.testbig.com/users/toeflwritingmaster
Minimum 200 words wanted.
Rates: 60.0 out of 100
Scores by essay e-grader: 18.0 Out of 30
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Note: This is not the final score. The e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.