Tropical cyclones, or hurricanes, are among the most violent and devastating natural phenomena on the planet. From a scientific perspective, however, they act as essential “heat engines” that help balance the global climate. Understanding how meteorological phenomena operate not only helps us decode the power of nature but also offers a fantastic opportunity to sharpen skills for Flowchart tasks and tackle tricky specialized terminology. In this article, ECE provides a comprehensive look at the ‘Hurricane’ reading passage, featuring an accurate translation, a curated list of key vocabulary, and a detailed breakdown of the answers.
Reading Passage
HURRICANE
They are essential features of the Earth’s atmosphere, as they transfer heat and energy between the equator and the cooler regions towards the poles.
Section A A hurricane is a large rotating storm centered around an area of very low pressure with strong winds blowing at an average speed in excess of 74 miles per hour. The whole storm system may be up to 10 miles high and on average 500 miles wide. It moves forward like an immense spinning top, at speeds up to 20 mph.
Section B There are various trigger mechanisms required to transform frequent storms into rarer hurricanes. These trigger mechanisms depend on several conditions being ‘right’ at the same time. One of the most influential factors is sources of very warm, moist air, which is derived from tropical oceans with surface temperatures greater than 26°C, and sufficient spin or twist from the rotating earth, which is related to latitude.
As the warm sea heats the air above it, a current of very warm moist air rises up quickly, creating a center of low pressure at the surface. Trade winds rush in towards this low pressure and the inward-spiralling winds whirl upwards releasing heat and moisture before descending.
The rotation of the Earth causes the rising column to twist, gradually taking on the form of a cylinder whirling around an eye of relatively still air, free from clouds. The rising air cools and produces towering cumulus and cumulonimbus clouds. Further aloft at 6 miles the cloud tops are carried outwards to give thick layer clouds due to the outward spiralling winds leaving the hurricane core.
Section C Great amounts of energy are transferred when warm water is evaporated from tropical seas. This energy is stored within the water vapor contained in moist air. As this air ascends, 90% of the stored energy is released by condensation, giving rise to the towering cumulus clouds and rain.
The release of heat energy warms the air locally causing a further decrease in pressure aloft. Consequently, air rises faster to fill this area of low pressure, and more warm moist air is drawn off the sea feeding further energy to the system. Thus a self-sustaining heat engine is created.
Only as little as 3% of the heat energy may be converted mechanical energy of the circulating winds. This relatively small amount of mechanical energy equates to a power supply of 360 billion kilowatt hours per day—or 6 months supply of electrical energy for the whole of the USA!
Section D Hurricanes form between 5 and 30 latitude and initially move westward (owing to easterly winds) and slightly towards the poles. Many hurricanes eventually drift far enough north or south to move into areas dominated by westerly winds (found in the middle latitudes). These winds tend to reverse the direction of the hurricane to an eastward path.
As the hurricane moves poleward it picks up speed and may reach between 20 and 30 mph. An average hurricane can travel about 300 to 400 miles a day, or about 3000 miles before it dies out. Hurricanes occur between July and October in the Atlantic, eastern Pacific and the western Pacific north of the equator. South of the equator, off Australia and in the Indian Ocean, they occur between November and March.
The name hurricane should only be used for those tropical storms occurring in the Atlantic. In the Pacific they are known as typhoons, in the Indian Ocean as cyclones. They are given names beginning with “A”, “B” etc. In order of occurrence and the names are alternately male and female.
Section E These phenomena can cause major destruction, especially when the hurricane’s path takes it over land. However a path over land also causes the destruction of the hurricane itself. As it moves over land its energy source is depleted and friction across the land surface distorts the air flow. This leads to the eye filling with cloud and the hurricane dies.
Section F Other than basic knowledge of general hurricane occurrence there are no atmospheric conditions that can be measured and combined to predict where a hurricane will develop. Therefore we can only forecast its path once formed. A network of instruments, men and equipment at the National Hurricane Center in Miami, Florida search out potential hurricanes in their early stages and track them through their life cycle until they decay and die.
Satellites detect hurricanes in their early stages of development and can help to provide early warning of imminent hurricanes. Reinforced aircraft fitted with instruments fly through and over hurricanes, and weather radar can locate storms within 200 miles of the radar station.
A hurricane warning is issued to coastal areas where winds of 74 mph or greater are definitely expected to occur, or dangerously high water or high waves are predicted. The general public are usually informed via television broadcasts and through a system of flying flags by day and lanterns by night.
More recently, the National Hurricane Center’s website has recently been developed to allow people to type in their zip code and get specific information about potential hazards in their area and where to evacuate to if necessary.
Questions
Questions 28-31: Use NO MORE THAN THREE WORDS from Section B for each answer.
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A current of heated (28) _________ raised up from the warm ocean.
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A center of (29) _________ created at the surface.
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Trade winds rush inwards, discharge (30) _________ before descending.
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The (31) _________ helps the column to twist, taking on the form of a cylinder spinning around an eye of the still air.
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The rising air cools and produces towering cumulus and cumulonimbus clouds.
Question 32-38:
Do the following statements agree with the claims of the writer in Reading Passage 3?
On your answer sheet please write:
TRUE if the statement is true
FALSE if the statement is false
NOT GIVEN if the information is not given in the passage.
32. Hurricanes often form around the equator.
33. Hurricanes are normally generated above the sea surface under relatively higher temperatures.
34. 3% of the mechanical energy generated from hurricanes could power the USA for half a year.
35. Hurricanes, typhoons and cyclones are all the same type of tropical storms.
36. Once the eye of the hurricane is filled with moist air, it will die.
37. We are still not capable of anticipating where a hurricane will develop.
38. A system of flying flags and lanterns is used to warn of hurricanes within 200 miles.
Questions 39-40: Write NO MORE THAN THREE WORDS for each answer.
39. How fast does a hurricane normally travel?
40. How broad is a typical hurricane system?
Detailed Reading Translation
HURRICANE
Section A: A hurricane is a large rotating storm centered around an area of very low pressure with strong winds blowing at an average speed exceeding 74 mph (approx. 119 km/h). The entire storm system can reach up to 10 miles high and average 500 miles across. It moves forward like an immense spinning top at speeds of up to 20 mph.
Section B: Various trigger mechanisms are required to transform frequent storms into rarer hurricanes. These mechanisms depend on several conditions aligning simultaneously. One of the most influential factors is the presence of very warm, moist air originating from tropical oceans with surface temperatures above 26°C, along with sufficient spin or twist from the Earth’s rotation, which is tied to latitude. As the warm sea heats the air above it, a current of very warm, moist air rapidly rises, creating a low-pressure center at the surface. Trade winds rush toward this low-pressure area, and these inward-spiraling winds swirl upward, releasing heat and moisture before descending.
The Earth’s rotation causes the rising column to twist, gradually taking the shape of a cylinder whirling around a relatively calm, cloud-free eye. The rising air cools, producing towering cumulus and cumulonimbus clouds. Higher up at 6 miles, the cloud tops are carried outward to form thick layer clouds due to the outward-spiraling winds leaving the hurricane core.
Section C: A massive amount of energy is transferred when warm water evaporates from tropical seas. This energy is stored within the water vapor contained in moist air. As this air ascends, 90% of the stored energy is released through condensation. The release of this heat energy warms the local air, causing a further drop in pressure aloft, which makes the air rise faster and draws in more warm, moist air from the sea. Consequently, a self-sustaining heat engine is created. Only about 3% of this heat energy is converted into mechanical energy for the circulating winds, but this relatively small amount of mechanical energy is enough to power the entire United States for 6 months!
Section D: Hurricanes form between latitudes 5 and 30. The term “hurricane” is reserved exclusively for tropical storms occurring in the Atlantic. In the Pacific, they are known as typhoons, and in the Indian Ocean, as cyclones. They are assigned names in alphabetical order, alternating between male and female names.
Section E: Hurricanes can cause massive destruction, especially when their path takes them over land. However, traveling over land also spells destruction for the hurricane itself. As it moves inland, its energy source is depleted, and surface friction distorts the airflow, causing the eye to fill with clouds and the storm to dissipate.
Section F: Aside from a basic understanding of general hurricane occurrence, there are no atmospheric conditions that can be measured to predict precisely where a hurricane will develop. We can only forecast its path once it has formed. Satellites and specialized aircraft equipped with instruments track the storms. Hurricane warnings are issued to coastal areas via television broadcasts, daytime flag systems, and nighttime lanterns.
Academic Vocabulary Summary
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Trigger mechanism (n): A mechanism that initiates a process or reaction.
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Derive from (v): To originate or stem from.
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Moist air (n): Air containing a high amount of water vapor or humidity.
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Condensation (n): The conversion of a vapor or gas to a liquid.
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Self-sustaining (adj): Able to continue in a healthy state without outside assistance.
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Mechanical energy (n): Energy possessed by an object due to its motion or position.
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Reverse (v): To move backward or change to the opposite direction.
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Deplete (v): To use up the supply or resources of.
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Friction (n): The resistance that one surface or object encounters when moving over another.
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Imminent (adj): About to happen (typically used of something undesirable).
Detailed Answer Explanations
28. moist air: “…a current of very warm moist air rises up quickly…”
29. low pressure: “…creating a center of low pressure at the surface.”
30. heat and moisture: “…winds whirl upwards releasing heat and moisture before descending.”
31. rotation of Earth: “The rotation of the Earth causes the rising column to twist…”
32. TRUE: Section D states that hurricanes form between latitudes 5 and 30, which are tropical regions surrounding the equator.
33. TRUE: Section B notes that hurricanes form over seas with surface temperatures above 26°C (relatively high temperatures).
34. FALSE: Section C states: “3% of the heat energy may be converted [to] mechanical energy… equates to… 6 months supply [for the USA]”. The statement incorrectly claims it is “3% of the mechanical energy”, whereas it is actually 3% of the *heat energy* converted into mechanical energy.
35. TRUE: Section D confirms they are the same type of tropical storm, just called by different names depending on the geographic region.
36. FALSE: Section E states that a hurricane dies when its eye is filled with clouds due to land friction, not because it is filled with “moist air”.
37. TRUE: Section F explicitly states: “…there are no atmospheric conditions… to predict where a hurricane will develop.”
38. NOT GIVEN: The reading mentions the flag and lantern system for warnings (Section F) and weather radar locating storms within 200 miles, but it never states that this warning system is limited to a 200-mile radius.
39. 20 mph: Section A states: “…at speeds up to 20 mph.”
40. 500 miles wide: Section A states: “…on average 500 miles wide.”
To handle reading passages about astronomy or meteorology like Hurricane successfully, pay special attention to sequence markers and cause-and-effect relationships. Mastering terms like low pressure, condensation, or friction will help you locate information lightning-fast in Flowchart or Diagram questions. Always remember that in True/False/Not Given questions, even a minor change in word form (such as heat energy vs. mechanical energy in question 34) can completely change the answer. Keep up your diligent study and best of luck reaching your IELTS target!





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