This site offers a virtual walk-through tour of a hydroelectric facility. The creation of hydroelectricity begins at the dam, where the power plant converts the force of falling water into electricity. It shows how dams operate and the equipment necessary for electrical generation. Full description.

The site offers virtual tours of a hydroelectric project, a fish passage, and a generator. It shows how dams operate, the equipment necessary for electrical generation, explains the electrical generation process, and touches on some environmental issues. Other materials presented here include a timeline about the discovery of electricity and power generation, a glossary, and links to newspaper articles ... Full description.

This interactive diagram allows the user to follow a drop of water from the source through the treatment process. Water may be treated differently in different communities depending on the quality of the water which enters the plant. Groundwater is water located under ground and typically requires less treatment than water from lakes, rivers, and streams. Users are invited to click on each treatment ... Full description.

This is a lesson that enables the student to describe how hurricanes move and change appearance over time through the use of the pubic domain image processing software. Full description.

Robowell is an automated process for monitoring selected ground-water-quality properties and constituents. It was developed to provide a cost effective monitoring system that met protocols expected for manual sampling. Users have access to real-time water quality data. There are also links to other water quality sites. Full description.

This resource includes a classroom activity, background information and a set of temperature and surface pressure data from the Pathfinder Lander. Students analyze data on temperature and pressure graphs from the first 30 days of the Pathfinder Mission to determine whether water could have existed under these conditions. A set of 15 images is also available, which can be reproduced on a photocopier ... Full description.

This lesson allows students to explore the importance of weather prediction and the Internet's role in changing the way weather is reported. By participating in an Internet scavenger hunt, students will come to a greater appreciation of the role Internet weather prediction plays in their own lives as well as the lives of people all over the world. Full description.

This activity examines many of the reasons why it is important to construct large dams, specifically, the three major dams across the Gunnison River leading into Black Canyon (Colorado). The importance of the dams for irrigation, electrical supply and recreation throughout history is explored. Students will learn about the different types of dam constructions, with pros and cons for each. There is ... Full description.

Ships travelling between Lake Ontario and Lake Erie use the Welland Canal. Beginning with a conversation between characters Mathise, Geo, and Trig, they explain how a lock in the canal operates by gravity alone, without pumps. The characters use mathematics to solve problems such as how long the locks take to fill and how to express the volume and flow of water in more common terms (bathtubs of water ... Full description.

Students investigate the importance of water historically and in their daily lives and examine the nature of water as a limited resource. Working in groups, they will list the various uses of water, discuss why water is a limited resource, research technological systems that are intended to use water as productively as possible, and create "How It Works" posters for presentation to the class. The ... Full description.