Relative Humidity Measurement

Measure relative humidity in the air by comparing the wet bulb and dry bulb temperatures

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Requirements

Measure relative humidity in the air using a simple device made of a temperature sensor, a plastic bottle, and some clay. Electronically plot the data you collect on graphs to analyze and learn from it. Experiment with different materials and different room temperatures in order to explore what affects humidity.

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WARNING: Your data will not be saved. To save data, run this activity as a registered user. You can register at the project portal. Please view the requirements below before launching this activity.

Subject
Earth and Space Science

Focus Area
Probeware

Grade Level
Middle School

License
CC BY 4.0

AAAS Benchmark Alignments (2008)

4. The Physical Setting

4B. The Earth
  • 4B/E3*. By the end of the 5th grade, students should know that when liquid water disappears, it turns into a gas (vapor) in the air and can reappear as a liquid when cooled, or as a solid if cooled below the freezing point of water. Clouds and fog are made of tiny droplets or frozen crystals of water.
  • 4B/E5** (NSES). By the end of the 5th grade, students should know that the weather is always changing and can be described by measurable quantities such as temperature, wind direction and speed, and precipitation. Large masses of air with certain properties move across the surface of the earth. The movement and interaction of these air masses is used to forecast the weather.
  • 4B/M14**. By the end of the 8th grade, students should know that the earth has a variety of climates, defined by average temperature, precipitation, humidity, air pressure, and wind, over time in a particular place.
  • 4B/M15** (NSES). By the end of the 8th grade, students should know that the atmosphere is a mixture of nitrogen, oxygen, and trace amounts of water vapor, carbon dioxide, and other gases.

9. The Mathematical World

9B. Symbolic Relationships
  • 9B/E2. By the end of the 5th grade, students should know that tables and graphs can show how values of one quantity are related to values of another.
  • 9B/M2*. By the end of the 8th grade, students should know that rates of change can be computed from differences in magnitudes and vice versa.
  • 9B/M3*. By the end of the 8th grade, students should know that graphs can show a variety of possible relationships between two variables. As one variable increases uniformly, the other may do one of the following: increase or decrease steadily, increase or decrease faster and faster, get closer and closer to some limiting value, reach some intermediate maximum or minimum, alternately increase and decrease, increase or decrease in steps, or do something different from any of these.

12. Habits of Mind

12B. Computation and Estimation
  • 12B/M1a*. By the end of the 8th grade, students should be able to find what part one number is of another and express it as a fraction or a percentage.
  • 12B/M7a*. By the end of the 8th grade, students should be able to use the units of the inputs to a calculation to determine what units (such as seconds, square inches, or dollars per tankful) should be used in expressing an answer.
12C. Manipulation and Observation
  • 12C/M3*. By the end of the 8th grade, students should be able to make accurate measurements of length, volume, weight, elapsed time, rates, and temperature by using appropriate devices.
12D. Communication Skills
  • 12D/M1. By the end of the 8th grade, students should be able to organize information in simple tables and graphs and identify relationships they reveal.
  • 12D/M4*. By the end of the 8th grade, students should be able to understand oral, written, or visual presentations that incorporate circle charts, bar and line graphs, two-way data tables, diagrams, and symbols.
  • 12D/M6**. By the end of the 8th grade, students should be able to present a brief scientific explanation orally or in writing that includes a claim and the evidence and reasoning that supports the claim.

Copyright
© Copyright The Concord Consortium

Record Link
<a href="">The Concord Consortium. Relative Humidity Measurement. Concord: The Concord Consortium, 2010, September 10.</a>

AIP
Relative Humidity Measurement (The Concord Consortium, Concord, 2010, September 10), WWW Document, (https://concord.org/).

AJP
Relative Humidity Measurement (The Concord Consortium, Concord, 2010, September 10), WWW Document, (https://concord.org/).

APA
Relative Humidity Measurement. (2010, September 10). Retrieved 2017, June 29, from The Concord Consortium: https://concord.org/

Disclaimer: The Concord Consortium offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure.

Requirements

This activity runs entirely in a Web browser. Preferred browsers are: Google Chrome (versions 30 and above), Safari (versions 7 and above), Firefox (version 30 and above), Internet Explorer (version 10 or higher), and Microsoft's Edge.

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Innovative Technology in Science InquiryThis resource is a part of the Concord Consortium's Innovative Technology in Science Inquiry project.

Grade Level
Middle School
Subject
Earth and Space Science
Focus Area
Probeware
Rating
0
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