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Humidity? Build a Psychrometer!
| Content Provider | TeachEngineering: STEM curriculum for K-12 |
|---|---|
| Author | Brooks, Hannah Gaddis, Dale Marceau, Shay Martin, Ashley Trifunovic, Lazar Soltys, Michael A. |
| Copyright Year | 2017 |
| Description | Students make simple psychrometers to measure humidity using two thermometers, a moist cotton ball and string. They collect inside and outside humidity data, calculate relative humidity, and compare to commercial psychrometer measurements (if available). They complete a worksheet and analyze the data, also learning how relative humidity factors into the real-world engineering design of many technologies such as clean forms of electricity generation like solar and wind. Using thermometers, cotton balls, string and water, students make simple psychrometers—a 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. |
| Language | English |
| Access Restriction | Open |
| Rights Holder | North Carolina State University Regents of The University of Colorado |
| Subject Keyword | Algebra Data Analysis and Probability Earth and Space |
| Content Type | Text Video |
| Time Required | PT45M |
| Education Level | Class VIII Class IX Class X |
| Pedagogy | Experimental Activity Lecture cum Demonstration |
| Resource Type | Hands-on |
| Subject | Modern Physics Probability Structure of the Earth |
