PBS
Pbs Teachers:dimming the Sun
Conduct an experiment and investigate how air temperature, relative humidity, wind speed, solar radiation and precipitation affect evaporation. Graph the data collected during the experiment.
Exploratorium
Exploratorium: Global Climate Change: Hydrosphere
Use this site to explore real scientific data relating to the hydrosphere. With this information you can gather evidence, test theories, and come to conclusions. Click on the data examples to view a full scale version.
American Chemical Society
Middle School Chemistry: Chapter 2: Changes of State
Five chemistry lessons about phase changes between the states of mattter complete with handouts and animations.
Great Idea Finder
The Great Idea Finder: Refrigerator
This site provides a brief overview of the invention of the refrigerator.
CPALMS
Florida State University Cpalms: Florida Students: Heat and States of Matter
Learn how states of matter can change as heat is added to a system.
Georgia State University
Georgia State University: Hyper Physics: Heat of Fusion
The heat of fusion is defined and described. A graphical representation of the heat of vaporization is given. A method for measuring and calculating the heat of fusion is also presented and explained.
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.
Curated OER
Carnegie Mellon: Vapor Pressure Tank
Basic design of a demonstration machine that will lower the vapor pressure and cause water to evaporate at room temperature.