Volcanic Reticulite
Volcano Terms and Definition

Volcanic eruptions are the clear and dramatic expression of dynamic processes going on in planet Earth. The author, one of the most profound specialists in the field of volcanology, explains in a concise and easy to understand manner the basics and most recent findings in the field of volcanology.

Digtal Microscope

Reticulite is basaltic pumice in which nearly all cell walls of gas bubbles have burst, leaving a honeycomb-like structure. Even though it is less dense than pumice, reticulite does not float in water because of the open network of bubbles. The delicate glass threads between the bubbles are so fragile that reticulite was first called "thread-lace scoria" by the great American mineralogist, James Dana. It has also been called limu .

Volcano Book
Volcano & Earthquake DK Eyewitness Books
Eyewitness Books provide an in-depth, comprehensive look at their subjects with a unique integration of words and pictures.

Volcano Glossary



Leapfrog Learning Systems

  • Handheld computerized learning system
  • Learn to write letters on the L-Max handheld screen - the letters you write will appear on the TV and star in an animated story!
  • Learn on the go or at home
  • Works with the full Leapster and Leapster L-Max software library
  • Stories suddenly come to life with the light tap of the Magic Pen
  • The award-winning LeapPad Learning System teaches fundamental reading skills in a way that keeps your child coming back again and again
  • The LeapPad Learning System uses a larger platform and thinner pen designed for preschoolers and kindergartners to introduce them to the magic of books and reading
  • The library is organized by grade to teach reading, phonics, vocabulary, math, science, music and much more

Learning Resources Gears! Gears! Gears! Oogly Googly

Includes motor and hand control (with forward/reverse switch), gears, springs, connecting blocks, two claws, and three eyeballs. Starting with the motor pack, add the pieces together according to the instructions or follow your own mad scientist ideas to create endless mayhem. Can be used alone or with other Gears! Gears! Gears! sets.

Learning Resources Gears! Gears! Gears!

Great toy to help open up the world of "how things work" for younger kids. Inspires imaginative play, problem solving, and cause & effect thought processes. Gear up for hours of colorful action with Gears! Gears! Gears! enables children to create hundreds of three-dimensional construction possibilities. Set features plastic gears, connectors and interlocking bases packaged in a giant storage tub with an Activity Guides.

Gears! Gears! Gears! Boogie Buddy Motorized Sets

Challenge kids' mechanical reasoning skills while encouraging creativity and gross motor coordination through building and movement. Color-coding makes it easy for children to follow building instructions for three different models. They can also create their own model. Compatible with all other Gears! Gears! Gears! Sets, sold separately.

U.S. Department of the Interior