The diagram below shows how a hot air balloon ascends and descends
The flow charts show the layouts and mechanics of a common hot balloon.
Overall, the balloon consists of several mechanisms cooperating to produce the weight difference between internal and external air.
The balloon is covered by the envelope, which is made from numerous gores and panels sewed in together. The normal balloon shapes look like the upside-down teardrop shape. The top of the balloon usually has a vent of some sort, called "parachute vent" which enables the pilot to release and control hot air. The envelope is fastened to the basket by ropes, and the burner is hung above the basket. There are a variety of propane cylinders which is put on the basket to providing fuel for this process.
The burner will ignite the mixture of propane and air to propel the hot air into the envelope. Increasing the air temperature inside the envelope makes it less dense and lighter than the surrounding air. Therefore, the balloon floats because of the buoyant force exerted on it.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2024-12-21 | nobitaa | 73 | view |
| 2024-12-20 | khanhkhanhlhp | 78 | view |
| 2024-12-11 | nguyendangquang.aspect | 11 | view |
| 2024-12-08 | nguyendangquang.aspect | 73 | view |
| 2024-11-29 | Nguyen Thinh | 84 | view |
- The three pie charts below show the changes in annual spending by a particular UK school in 1981, 1991 and 2001.Summarise the information by selecting and reporting the main features, and make comparisons where relevant. 84
- People are living longer. Some people think that it causes big problems. Others, however, think the aging population has many advantages for business, government and society in general. Discuss both views and give your opinion. 61
- The 3 pie charts show the total school spending in all three years (1981, 1991 and 2001) in the UK. Summarize the information by selecting and reporting the main features, and make comparisons where relevant. 78
- The diagram below shows how a hot air balloon ascends and descends 86
- The table illustrates the proportion of monthly household income five European countries spend on food and drink, housing, clothing and entertainmeSummarize the information by selecting and reporting the main features and make comparisons where relevant.W 61
Grammar and spelling errors:
Line 5, column 173, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
...ok like the upside-down teardrop shape. The top of the balloon usually has a vent o...
^^^
Line 5, column 319, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
...e pilot to release and control hot air. The envelope is fastened to the basket by r...
^^^
Transition Words or Phrases used:
if, look, so, therefore
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 6.0 7.0 86% => OK
Auxiliary verbs: 1.0 1.00243902439 100% => OK
Conjunction : 7.0 6.8 103% => OK
Relative clauses : 3.0 3.15609756098 95% => OK
Pronoun: 3.0 5.60731707317 54% => OK
Preposition: 25.0 33.7804878049 74% => OK
Nominalization: 1.0 3.97073170732 25% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 839.0 965.302439024 87% => OK
No of words: 167.0 196.424390244 85% => More content wanted.
Chars per words: 5.02395209581 4.92477711251 102% => OK
Fourth root words length: 3.59483629437 3.73543355544 96% => OK
Word Length SD: 2.59157636636 2.65546596893 98% => OK
Unique words: 103.0 106.607317073 97% => OK
Unique words percentage: 0.616766467066 0.547539520022 113% => OK
syllable_count: 263.7 283.868780488 93% => OK
avg_syllables_per_word: 1.6 1.45097560976 110% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 0.0 1.53170731707 0% => OK
Article: 8.0 4.33902439024 184% => OK
Subordination: 0.0 1.07073170732 0% => More adverbial clause wanted.
Conjunction: 1.0 0.482926829268 207% => Less conjunction wanted as sentence beginning.
Preposition: 0.0 3.36585365854 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 10.0 8.94146341463 112% => OK
Sentence length: 16.0 22.4926829268 71% => The Avg. Sentence Length is relatively short.
Sentence length SD: 24.2041318787 43.030603864 56% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 83.9 112.824112599 74% => OK
Words per sentence: 16.7 22.9334400587 73% => OK
Discourse Markers: 2.3 5.23603664747 44% => More transition words/phrases wanted.
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 2.0 1.69756097561 118% => OK
Sentences with positive sentiment : 3.0 3.70975609756 81% => OK
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 7.0 4.09268292683 171% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.239725758974 0.215688989381 111% => OK
Sentence topic coherence: 0.0878309510465 0.103423049105 85% => OK
Sentence topic coherence SD: 0.0652880366509 0.0843802449381 77% => OK
Paragraph topic coherence: 0.153997494451 0.15604864568 99% => OK
Paragraph topic coherence SD: 0.0502460021004 0.0819641961636 61% => OK
Essay readability:
automated_readability_index: 10.6 13.2329268293 80% => Automated_readability_index is low.
flesch_reading_ease: 55.24 61.2550243902 90% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 9.5 10.3012195122 92% => OK
coleman_liau_index: 11.54 11.4140731707 101% => OK
dale_chall_readability_score: 9.06 8.06136585366 112% => OK
difficult_words: 49.0 40.7170731707 120% => OK
linsear_write_formula: 8.0 11.4329268293 70% => OK
gunning_fog: 8.4 10.9970731707 76% => OK
text_standard: 10.0 11.0658536585 90% => OK
What are above readability scores?
---------------------
Rates: 78.6516853933 out of 100
Scores by essay e-grader: 7.0 Out of 9
---------------------
Note: 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.