Humidity? Build a Psychrometer!

Using thermometers cotton balls string and water students make simple psychrometersa tool that measures humidity.
They learn the difference between relative humidity the ratio of water vapor content to water vapor carrying capacity and dew point the temperature at which dew forms.
Teams collect data using their homemade psychrometers and then calculate relative humidity inside and outside comparing their results to an off-the-shelf psychrometer if available.
A lab worksheet is provided for data collection and calculation.
As a real-world connection students learn that humidity and air density is taken into consideration by engineers for many design projects.
To conclude they answer and discuss analysis and application questions. View the full activity on TeachEngineering: TeachEngineering has over 1500 FREE lessons and activities.
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Источник: rutube.ru