Explore how heating and cooling iron, brick, and water adds or removes energy. See how energy is transferred between objects. Build your own system, with energy sources, changers, and users. Track and visualize how energy flows and...

In this lesson, 3rd graders reflect on who they are by listing their likes and dislikes, beliefs, hobbies, etc. They then create a rubbing of their name and add rubbings of objects they like, along with symbols and sketches. Next, they...

The virtues of programmable thermostats are discussed. Includes a section titled "Thermostat Set-back Calculation;" the visitor can enter the normal and an adjusted thermostat setting and an outdoor temperature and view the percent...

From the Mad Scientist Network. Using a question and answer format, this page explains the answer to the question "How does An air conditioner or refrigerator work?" The scientific principles which underly their operation and the process...

We all know that it takes energy to provide us with the basics of shelter: heating, cooling, lighting, electricity, sanitation and cooking. To create energy-efficient housing that is practical for people to use every day requires...

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.

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.