Geography - Natural Hazards - Weather Hazards
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Questions and Answers

What is the calmest part of a tropical revolving storm called?

  • Storm Surge
  • Eye Wall
  • Eye (correct)
  • Rainband
  • Tropical revolving storms typically form outside the tropics.

    False (B)

    What is the temperature requirement for the formation of a tropical revolving storm?

    27°C or higher

    A storm surge is caused by the weight of the TRS on the __________.

    <p>surface</p> Signup and view all the answers

    Match the types of storms with their definitions:

    <p>Thunderstorm = A localized storm producing lightning and thunder Tropical Depression = An organized system of clouds and thunderstorms with a defined circulation Tropical Storm = A system with wind speeds from 39 to 73 mph Hurricane = A stronger tropical storm with wind speeds of 74 mph or higher</p> Signup and view all the answers

    Which part of a TRS has the most powerful winds?

    <p>Eye Wall (D)</p> Signup and view all the answers

    The Ferrel Cell is one of the three main cells in global atmospheric circulation.

    <p>True (A)</p> Signup and view all the answers

    Name one example of a location where tropical revolving storms typically form.

    <p>Indian Ocean or Pacific Ocean</p> Signup and view all the answers

    Tropical revolving storms can form during the transition from summer to __________.

    <p>autumn</p> Signup and view all the answers

    Which type of storm is categorized by wind speeds exceeding 74 mph?

    <p>Hurricane (D)</p> Signup and view all the answers

    Describe the significance of water temperature in the formation of a tropical revolving storm.

    <p>A water temperature of 27°C or higher is crucial for the formation of a tropical revolving storm as it provides the necessary heat and moisture to fuel rising air.</p> Signup and view all the answers

    Explain how the structure of a tropical revolving storm contributes to its intensity.

    <p>The eye provides a calm center, while the eye wall contains the strongest winds, and rainbands contribute to heavy precipitation, all intensifying the storm's effects.</p> Signup and view all the answers

    Identify the anomalies regarding the geographical distribution of tropical revolving storms.

    <p>Tropical revolving storms can form outside the tropics, such as along the southwestern coast of Australia and in the USA.</p> Signup and view all the answers

    How does a storm surge relate to the impacts of a tropical revolving storm?

    <p>A storm surge is the elevated water level caused by the weight of the storm, which can lead to significant flooding and destruction along coastlines.</p> Signup and view all the answers

    What specific atmospheric conditions are necessary for the formation of a tropical revolving storm?

    <p>Rising air and water temperatures, particularly around 27°C, are required for TRS formation, along with conditions that promote spin.</p> Signup and view all the answers

    What happens to the air at the equator?

    <p>It warms up and rises. (B)</p> Signup and view all the answers

    Air diverges and some travels back toward the poles while the rest moves towards the equator.

    <p>False (B)</p> Signup and view all the answers

    What is the term for the 'lid' that air hits as it rises?

    <p>tropopause</p> Signup and view all the answers

    The process of air sinking creates __________ pressure at around 30° north and south of the equator.

    <p>high</p> Signup and view all the answers

    Match the following locations with their air movement characteristics:

    <p>Equator = Low pressure, air rises 30° North and South = High pressure, air sinks 50° North and South = Low pressure, air warms Poles = High pressure, air sinks</p> Signup and view all the answers

    Global Atmospheric Circulation: The movement of __ around the ____ to balance the ______ of the ____.

    <p>air, planet, temperature, atmosphere</p> Signup and view all the answers

    Explain the entire process of Global Atmospheric Circulation in detail.

    <p>At the equator, the air is warm due to heating from the sun. This creates low pressure at the surface and produces powerful storm clouds with torrential rain. As the air rises, it cools and hits a 'lid' called the tropopause. The cooler air then moves towards the poles, sinking around 30 degrees north and south of the equator, which creates high pressure at the surface. The air diverges, with some returning to the equator and other air moving toward the poles. At about 50 degrees north and south, the air diverges with the travelling to the poles sinking and creating high pressure.</p> Signup and view all the answers

    Explain in detail the formation of a tropical revolving storm.

    <p>A tropical revolving storm forms over warm ocean waters, usually when sea surface temperatures are above 27 degrees Celsius. Moisture evaporates from the ocean surface, rising into the atmosphere and cooling to form clouds and thunderstorms. This process causes the air to warm and rise further, creating low pressure at the surface. The Earth's rotation causes the storm system to begin rotating, and as it organizes, it can intensify into a tropical cyclone.</p> Signup and view all the answers

    What is the main purpose of using computer models in tropical storm analysis?

    <p>To calculate the possible path of the storm (A)</p> Signup and view all the answers

    Tropical storms have remained consistently frequent since the start of the 20th century.

    <p>False (B)</p> Signup and view all the answers

    What should be done to buildings to protect against tropical storms?

    <p>They should be built on stilts or reinforced with concrete.</p> Signup and view all the answers

    The maximum sustained winds of a storm increase by at least __________ mph within a 24-hour period during rapid intensification.

    <p>35</p> Signup and view all the answers

    Which of the following is NOT a strategy for preparation against tropical storms?

    <p>Improve meteorological satellites (B)</p> Signup and view all the answers

    Match the following terms with their descriptions:

    <p>Storm Prediction = Monitoring storms using various data sources Storm Protection = Defending homes from tropical storm damage Storm Preparation = Planning evacuation and training services Rapid Intensification = Increase in maximum winds by 35 mph in 24 hours</p> Signup and view all the answers

    Emergency services do not need to prepare for disasters related to tropical storms.

    <p>False (B)</p> Signup and view all the answers

    The increase in tropical storms has been attributed to __________ change.

    <p>climate</p> Signup and view all the answers

    What was the approximate number of named storms in 1935?

    <p>10.5 (A)</p> Signup and view all the answers

    Match the tropical storm topics with their corresponding details:

    <p>Prediction = Use of computer models to calculate storm paths Protection = Building designs that withstand storm surges Preparation = Planning evacuation routes for quick response Trends = Increase in named storms since the 20th century</p> Signup and view all the answers

    Match the protection strategies with their examples (+ Think about whether they are Prediction/Protection/Preparation):

    <p>Boarding up windows = Defensive measure for homes against storms Buildings on stilts = Design to avoid storm surges Reinforced concrete = Material used for hurricane-resistant structures Emergency service training = Preparation for disaster response with helicopters</p> Signup and view all the answers

    Match the sources of storm data with their descriptions (+ Think about whether they are Prediction/Protection/Preparation):

    <p>Radar = Real-time weather monitoring technology Satellites = Space-based observation systems for storms Aircraft = Aerial reconnaissance for storm tracking Computer Models = Simulate possible storm paths and impacts</p> Signup and view all the answers

    Flashcards

    Tropical Cyclone (TRS)

    A large, rotating storm system that forms over warm ocean waters, characterized by strong winds, heavy rainfall, and a central eye.

    Conditions for TRS Formation

    Very warm ocean water (at least 27°C), rising air, and a lack of strong wind shear are essential for forming a tropical cyclone.

    Hadley Cell

    This cell is located near the equator and drives the movement of air towards the poles.

    Ferrel Cell

    This cell is located at mid-latitudes and moves air back towards the equator.

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    Polar Cell

    This cell is located near the poles and drives air downwards towards the equator.

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    Eye of a TRS

    The center of a tropical cyclone, known for its calm conditions with no wind and high pressure.

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    Eye Wall of a TRS

    The most dangerous part of the storm where the strongest winds are concentrated around the edge of the eye.

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    Rainbands of a TRS

    Bands of heavy rain that spiral around the edge of the eye in a tropical cyclone.

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    Storm Surge

    The displacement of water around a tropical cyclone caused by the storm's weight on the ocean surface.

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    Distribution of TRS

    Tropical cyclones typically form between the Tropic of Cancer and Tropic of Capricorn, but some exceptions occur beyond these regions.

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    What are the ideal conditions for a tropical cyclone to form?

    Warm ocean water (at least 27°C), rising air, and a lack of strong wind shear are essential for forming a tropical cyclone. The presence of warm water fuels the storm, while rising air creates a low-pressure system in the center, drawing in more moisture and creating the spinning motion. The lack of wind shear prevents the storm from being disrupted by strong winds.

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    What is the "Eye" of a Tropical Cyclone (TRS)?

    The Eye of a TRS is the center of the storm, known for its surprisingly calm conditions with no wind and high pressure. This area is often circular in shape and can be 20-40 miles wide. As the air sinks in the eye, it warms and creates a zone of clear skies and relatively low wind speeds.

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    Where are the strongest winds found in a TRS?

    The Eye Wall of a TRS is the most dangerous part of the storm, where the strongest winds are concentrated around the edge of the eye. This area is characterized by intense rainfall and powerful gusts of wind that surge towards the center before being deflected back up by the central low-pressure system, creating the spinning motion.

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    What is a "Storm Surge"?

    A storm surge is a rise in sea level caused by the weight of a TRS pressing down on the ocean surface. This can lead to significant flooding along coastlines, especially if the storm surge coincides with high tide. As the storm moves towards the shore, the massive force of the storm can displace water, causing it to pile up and extend well beyond normal sea level.

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    Where do Tropical Cyclones (TRS) typically form? Are there any exceptions?

    Tropical cyclones generally form between the Tropic of Cancer and the Tropic of Capricorn, which are located around 23.5 degrees north and south of the equator respectively. However, in rare cases, some tropical revolving storms form beyond these regions, such as the USA and the southwest coast of Australia. These anomalies are likely due to specific oceanographic conditions that favor the formation of storms, even outside the typical equatorial bands.

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    What is a Tropical Cyclone (TRS)?

    The spinning motion of air around a low-pressure center, fueled by warm, moist air rising and creating a cycle of rising and sinking air.

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    What is the Eye of a TRS?

    The calmest part of a TRS, with high pressure and no wind. It can be 20-40 miles wide.

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    What is the Eye Wall of a TRS?

    The most dangerous part of a TRS, with the most powerful winds concentrated around the edge of the eye.

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    What are Rainbands in a TRS?

    Torrential rain bands spiraling around the edge of the eye, typical of Tropical Cyclones.

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    What is air movement and temperature?

    The movement of air around the planet to balance the temperature of the atmosphere.

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    What happens to air at the equator and poles?

    The warm air at the equator rises, creating low pressure and stormy weather. As the air rises, it cools and moves towards the poles, sinking around 30° north and south of the equator due to higher pressure.

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    What is air divergence and replacement?

    When air rises at the equator, it creates low pressure, causing more air to be drawn in, replacing the rising parcels.

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    How does air movement cause low and high pressure at different latitudes?

    As the air moves towards the poles, it warms up, causing low pressure around 50° north and south of the equator. This leads to more air moving towards the poles and sinking at the very poles due to high pressure.

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    What is the main driver of air movement?

    Air movement is driven by the uneven heating of the Earth, resulting in the circulation of air masses and changes in temperature and pressure.

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    How do scientists monitor tropical storms?

    Scientists utilize various tools like radar, satellites, and aircraft to observe tropical storms.

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    What's used to predict a storm's path?

    Computer models are used to compute the path a tropical storm might take.

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    How to protect homes and businesses from storms?

    People should protect their homes and businesses by securing them against wind and rain.

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    How can buildings be built to be storm-resistant?

    Structures can be built on stilts or designed to withstand strong winds and water.

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    How do governments prepare for people's safety?

    Governments plan evacuation routes to quickly move people away from danger.

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    How do emergency services prepare for tropical storm disasters?

    Emergency responders train and prepare for rescues, including flying in helicopters.

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    How can future building projects be planned for storm safety?

    New developments can be planned in areas less likely to be severely hit by storms.

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    How has the number of tropical storms changed over time?

    The total count of named tropical storms has been increasing over the last century.

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    How does climate change affect tropical storms?

    Climate change is increasing the rate of warming, making powerful tropical storms more likely.

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    What is rapid intensification?

    Rapid intensification is a rapid increase in a storm's wind speed within a 24-hour period.

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    How do governments prepare for tropical storms?

    Governments plan evacuation routes to swiftly move people out of danger.

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    How are tropical storm paths predicted?

    Computer models are used to predict the potential path that a tropical storm might take.

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    Study Notes

    Definition of a Tropical Cyclone

    • Movement of air around the planet, influencing atmospheric temperature, especially around the poles.

    Global Atmospheric Circulation

    • Describes and explains the process of global atmospheric circulation.
    • Includes polar, Ferrel, and Hadley cells.
    • Summer and autumn periods between the equator are notable for the Coriolis effect.

    Tropical Cyclone (TRS) Conditions

    • TRS (Tropical Storm) conditions are often characterized by unstable atmospheric conditions.
    • Unstoppable rising air and high water temperatures contribute to TRS formation.
    • TRS are very fussy and particular conditions.

    Tropical Cyclone Formation

    • The conditions for TRS formation are complex.
    • Typically develop between the tropic of cancer and the tropic of Capricorn.
    • For example, in the Indian and Pacific Ocean regions.
    • An anomaly exists where tropical storms form beyond the tropics, for instance, along the east coast of the USA/South West Australia. These are often referred to as "anomalous" tropical storms.

    TRS Structure

    • Warm, moist air rises creating towering cumulonimbus clouds.
    • Cold dry air sinks creating clear skies and high pressure.
    • The eye of the TRS is the calmest part, with high pressure, no wind and around 20-40 miles wide.
    • The wall is the most dangerous part of the TRS, with the most powerful winds.
    • There is a cirrus shield that is dome-like, and visible from space.
    • The eye is in the middle and can be seen from space.
    • Low pressure, high moisture containing air and old sinking air creates the eye.

    TRS Distribution

    • Describes the global distribution of tropical storm regions.
    • Some anomalies in the formation of tropical storms exist beyond the tropics, for instance, along the east coast of the USA/South West Australia. These are often referred to as "anomalous" tropical storms.

    TRS Strength and Characteristics

    • TRS peak temperatures around 27°C are typical.
    • TRS intensity can vary by location.
    • A storm surge can occur, displacing water around the TRS, caused by the "weight" of the TRS on the ocean surface.
    • TRS can have a peak intensity.
    • TRS are measured on a scale.
    • Frequency of TRS may fluctuate over time. For example, in 1935 the number of named storms was 10.5, and in 1955 the number was around 9.
    • However, from 1940 the number of named storms continuously increases by each year.

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    Description

    This quiz explores the definition, conditions, and formation of tropical cyclones. It also delves into global atmospheric circulation and the structural characteristics of tropical storms. Test your knowledge on how these powerful weather systems develop and function.

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