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18 Cards in this Set

  • Front
  • Back

What are the general characteristics of tropical cyclones?

Tropical cyclones bring violent weather conditions and cause great destruction.

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.

Why do tropical cyclones have names?

The first letter of the name tells us how many cyclones have occurred that year.

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.

In which direction do they travel?

East to West

What are tropical cyclones called in different parts of the world?

Hurricaines - N America

Typhoon - Japan/Asia

Willy Willy - Australia

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.

What time of year do tropical cyclones occur?

Late summer, early autumn.

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.

Tropical cyclones develop at the ITCZ where hot, moist air from the tropical easterlies converges.

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.

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)

How does a tropical cyclone start and develop?

Gale force winds start spiralling, worst weather is in forward left-hand quadrant.

Where and when does the cyclone end?

Tropical cyclones usually die out rapidly when they reach the land.
Due to friction, drier air, cooler sub-tropical area

What is the first stage of a tropical cyclone called?

the formative stage

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

The eyewalls have heavy rain and thunderstorms occur, and the sea is very rough due to the strong winds blowing.

Beyond the eyewall, there is steady rainfall

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.

Give examples of long-term effects of tropical cyclones?

Long-term effects include contamination of water supplies and soil erosion.

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.