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Chapter 27: Rocks

U.S. Geological Survey
Erupting volcanos spew lava, acidic gases, and tons of ash into the air, all of which can threaten lives and property. Which type of volcanic hazard poses the greatest threat?

U.S. Department of Energy
Describe several projects dealing with clean coal technology. Locate these projects on the map found at this site.

Unit 6: Earth Materials and Resources

Volcano World
An erupting volcano is an awesome sight to behold. Study photographs of explosive eruptions, then draw a world map showing the location of at least five active volcanoes.

Willow Grove School, Buffalo Grove, Ill.
Minerals can be classified according their hardness, color, luster, cleavage, or appearance. Make a table listing the characteristics of four different minerals.

The Center for Improved Engineering and Science Education
Clean water may be our most precious resource. Join students and scientists in a global effort to monitor the quality of rivers, oceans, lakes, and streams.

Environmental Protection Agency
Wetlands are important habitats for many species. Call the Wetlands Hotline to learn more about government programs to protect these areas.