University of Illinois
University of Illinois Extension: Moisture in the Air Humidity
Have you ever walked outside in the summer and the felt sticky? You are experiencing humidity. Learn more about humidity, relative humidity, and dew point temperature on this website.
Society for Science and the Public
Science News for Students: Watering the Air
Discusses research done in the American Midwest showing that farming practices that increase humidity levels possibly could have an impact on the weather, causing a reduction in the average temperature and an increase in the amount of...
The Franklin Institute
Franklin Institute Online: Keep Your Own Weather Journal
This site, which is provided for by the Franklin Institute Online, gives a format for keeping a weather journal.
CK-12 Foundation
Ck 12: Fifth Grade Science: Earth Science: Weather and Water in the Atmosphere
[Free Registration/Login may be required to access all resource tools.] Discusses what causes weather, what humidity is and its role in the weather, how clouds are classified, and types of precipitation and how they form.
Discovery Education
Discovery Education: Weather Maps
This site provides a lesson plan in which groups of students will each investigate a different type of weather map use for weather forecasting. Also includes discussion questions, extension ideas, and links to additional sites for more...
CK-12 Foundation
Ck 12: Earth Science: Clouds Study Guide
This comprehensive study guide covers the main terms and concepts needed for an earth science unit on clouds. Review questions are included at the bottom of the study guide.
University Corporation for Atmospheric Research
Ucar: Humidity
The amount of water vapor in the air is called humidity.
University Corporation for Atmospheric Research
Ucar: How Weather Affects Air Quality
How is air pollution affected by weather? Some types of pollution are worse in the summer heat, while others are worse in cold winter weather.
Science Buddies
Science Buddies: Make a Hygrometer to Measure Humidity
Learn how to make a hygrometer to measure the humidity level in the air.
Other
Warm Air: Central Air Conditioning
The operation of conventional air conditioners are described. Their parts and the refrigerant/heat exchange cycle is discussed. The use of alternative geothermal systems are explained.
National Snow and Ice Data Center
National Snow and Ice Data Center: Factors Affecting Arctic Weather and Climate
An introduction to the factors that affect the Arctic's weather and climate: latitude, land/sea distribution, solar radiation, air temperature, air pressure, winds, humidity, clouds, and precipitation.
USA Today
Usa Today: Understanding Air Density and Its Effects
In simple terms, density is the mass of anything - including air - divided by the volume it occupies. In the metric system, which scientists use, we usually measure density in terms of kilograms per cubic meter. The air's density depends...
Science4Fun
Science4 Fun: Weather
What is weather? Learn how weather is defined by parameters, weather forecasting, and Weather phenomena.