Q:

How is wind speed measured?

A:

Wind speed is measured using a meteorological device known as an anemometer. This device measures wind velocity and is an important tool for meteorologists who need to study weather patterns.

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Although anemometers are available in several forms, the most common type is the cup anemometer. The cup anemometer has a vertical pole with three or four horizontal arms connected to the top. The horizontal arms have metal cups connected to the ends. When the wind blows, the cups begin to rotate the arms around the vertical pole. The rotating action of the cups turns the vertical pole, which is attached to a device that calculates wind speed.

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Related Questions

• A:

Two instruments that measure wind direction are the wind or weather vane and the wind sock. These devices indicate the direction from which wind is blowing from.

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• A:

Measuring speed requires time (T) and a known distance (D). Using the formula distance = rate x time (D=R*T), one determines the average speed by dividing distance by time, or R = D/T. This method assumes the object being measured is already in motion.

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• A:

Wind speed is the rate or movement of air flow as it travels from high to low pressure, in relation to the Earth. Warm air rises because it weighs less than cold air, and the cold air then moves in and replaces the warm air.