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Chapter 3: 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 1: The Nature of Science

Washington University Medical School
A network of scientists is online, ready to answer your questions about science. Ask a question about Earth, life, or physical science, or conduct one of the many experiments found at this site.

NOVA Online
Ancient artifacts tell archaeologists a lot about the lives of prehistoric people. Sharpen your archaeological skills by reassembling broken pieces of a clay pot.

Online Interactive Periodic Table
The periodic table arranges elements according to their properties. What element does the symbol Mg represent? Draw the atomic structure of this element.

Science Made Simple
Practice converting English units of measurement to SI units. Record your results in your Science Journal.