Wildland Firefighting Practice Exam

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Prepare for the Wildland Firefighting Exam with our engaging quiz featuring multiple-choice questions and detailed explanations. Boost your knowledge and confidence to tackle this essential certification.

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What tool is included in a field weather kit to measure relative humidity?

Thermometer
Psychrometer
Barometer
Anemometer

The correct answer is: Psychrometer

The tool included in a field weather kit to measure relative humidity is the psychrometer. A psychrometer consists of two thermometers—a wet-bulb thermometer and a dry-bulb thermometer. The dry-bulb thermometer measures the air temperature, while the wet-bulb thermometer is moistened and reflects how much moisture is in the air based on the evaporation of water from its surface. By comparing the readings from both thermometers, you can calculate relative humidity using established formulas or psychrometric charts. This is vital for wildland firefighting, as understanding humidity levels can impact fire behavior and the effectiveness of firefighting efforts. The other tools mentioned serve different purposes. A thermometer measures temperature; a barometer gauges atmospheric pressure; and an anemometer measures wind speed. While all these instruments contribute to understanding weather conditions, only the psychrometer directly addresses the measurement of relative humidity.