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18 Cards in this Set
- Front
- Back
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What are the general characteristics of tropical cyclones? |
Tropical cyclones bring violent weather conditions and cause great destruction. |
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How do tropical cyclones affect humans? |
Strong winds destroy houses and electricity cables, and uproot trees. Huge waves created by the strong winds, can drown coastal towns and all the people in them. |
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Why do tropical cyclones have names? |
The first letter of the name tells us how many cyclones have occurred that year. |
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Where do tropical cyclones occur? |
Tropical cyclones occur between 30° N and 30° S latitude, and on the eastern side of continents, where warm ocean currents are. |
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In which direction do they travel? |
East to West |
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What are tropical cyclones called in different parts of the world? |
Hurricaines - N America Typhoon - Japan/Asia Willy Willy - Australia |
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What are the temperature, pressure and wind conditions necessary for a tropical cyclone to occur? |
Tropical cyclones occur hot, moist air; with a formation of an intense low pressure cell; and Coriolis force. |
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What time of year do tropical cyclones occur? |
Late summer, early autumn. |
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What is the ITCZ and explain it in relation to tropical cyclones. |
The Inter Tropical Convergence Zone; region in the tropics where the two sets of tropical easterlies meet. |
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What is latent heat and how does it affect tropical cylones? |
Latent heat is 'hidden' heat energy that is released when water vapour condenses, which provides energy need to sustain the cylone. |
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Explain the conditions in the tropical cyclone's eye? |
Low pressure sucks down the air, causing calm, cloudless conditions and warm air due to the adiabatic heating (temp change due to change in height and pressure) |
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How does a tropical cyclone start and develop? |
Gale force winds start spiralling, worst weather is in forward left-hand quadrant. |
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Where and when does the cyclone end? |
Tropical cyclones usually die out rapidly when they reach the land. |
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What is the first stage of a tropical cyclone called? |
the formative stage |
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What pressure, temperature, winds and rainfall are associated with different parts of a tropical cyclone? |
In the eye there is hot, humid calm weather caused by the descending warming air Beyond the eyewall, there is steady rainfall |
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Give examples of short-term effects of tropical cyclones? |
Short-term effects include flooding, the destruction of buildings, bridges, power lines and roads, the loss of livestock and crops, and the spread of disease. |
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Give examples of long-term effects of tropical cyclones? |
Long-term effects include contamination of water supplies and soil erosion. |
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What are some ways to improve tropical cyclone reponses to prevent loss of life and minimise damage.? |
Accurate prediction and warning systems, community education, and better land use planning. |
