Thunderstorms, warm ocean water and light wind are needed for a hurricane to form (A). Once formed, a hurricane consists of huge rotating rain bands with a center of clear skies called the eye which is surrounded by the fast winds of the eyewall (B).
Tropical Storm: Wind speeds between 35 and 64 knots (40-73 mph)
Hurricane: Wind speed greater than 64 knots (74 mph)
Tropical Depression: Wind speeds between 20 and 34 knots (23-39 mph)
Tropical Disturbance: Thunderstorms with light cyclonic circulation
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Answer:
The five tools used by Meteorologist are:
- Barometer- atmospheric pressure
- Sling Psychrometer- humidity and dew point
- Rain Gauge- amount of rain fall
- Wind vain- Wind direction
- Anemometer- measures wind speed.
Explanation:
Five types of measuring instruments used by Meteorologists:
- A barometer is an instrument used by the meteorologist to measure the atmospheric pressure. Since, atmospheric pressure changes with the altitude, barometer helps in measuring atmospheric pressure above and below sea level. There are two types of barometer- mercury and aneroid.
- Sling psychrometer is an instrument used to measure the humidity and dew point of an area. There are two types of thermometer in this wet-bulb and dry-bulb.
- Rain Gauge is an instrument used to collect the rainfall and measure the amount of it. It is done by collecting the precipitation of an area and then it is used to measure the rainfall.
- Wind vane is an instrument used to measure the direction of wind or from which direction the wind is coming. It is also known as weather vane.
- Anemometer is an instrument used to measure wind speed. It is used in weather stations.
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