Bomb
Volcano Terms and Definition


NOVA - In the Path of a Killer Volcano
The scientists who remain behind- and see some astonishing footage of the world's largest volcanic eruption in 80 years.





Fire Mountain: The Eruption and Rebirth of Mount St. Helens
Two hundred and thirty square miles leveled in moments

These basaltic lava bombs were erupted by Mauna Kea Volcano, Hawaii.
Bomb

Volcanic bombs are lava fragments that were ejected while viscous (partially molten) and larger than 64 mm in diameter. Many acquire rounded aerodynamic shapes during their travel through the air. Volcanic bombs include breadcrust bombs, ribbon bombs, spindle bombs (with twisted ends), spheroidal bombs, and "cow-dung" bombs.



This dacite breadcrust bomb (about 15 cm in diameter) was erupted from the lava dome at Mount St. Helens, Washington.
Breadcrust Bomb

A breadcrust bomb is a volcanic bomb with a cracked and checkered surface, sometimes resembling the surface of a loaf of bread. The cracks develop when the outer surface of a partially molten lava fragment cools to form a brittle surface and then subsequently cracks as the hot interior expands due to the continued growth of gas bubbles.
volcanism
Volcanism
Volcanic eruptions are the clear and dramatic expression of dynamic processes going on in planet Earth.



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



Ring of Fire - IMAX
The Closest You'll Ever Get to a Volcano Originally filmed in IMAX Ring of Fire takes you heart stopping close to the great circle of volcanoes and seismic activity that rings the Pacific Ocean. This film has been seen by millions of people. The story of these immense volcanic forces and the half a billion people that coexist with them every day around the fiery boundary of the Pacific Rim

National Geographic - Volcano
The most dazzling but destructive natural force on earth. Massive volcanic eruption can turn day into night, releasing the power of an atomic blast, spewing toxic avalanches of lava, gas, and ash. National Geographic Video transports you to some of the world's most notorious volcanoes

National Geographic's Restless Earth Collection
Asteroids Deadly Impact Volcano Nature's Fury. The devastating powers of earthquakes, hurricanes, tornadoes, volcanoes and other earth-shattering forces of nature in dramatic scenes of destruction and inspiring human courage captured by the acclaimed filmmakers of National Geographic

Super volcano - It's Under Yellowstone. And It's Overdue

A subterranean sea of molten lava that scientists are sure will burst through the Earth's crust it's just a question of when. And if the resulting super-volcanic eruption is anything like the last one on earth which plunged the world into darkness for six years, tipped us into the last Ice Age and reduced the human population to just 2,000 people we're in for one explosive ride


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.

  Smart Educational Toys
Video Games
Groceries to Your Door
Home Security Systems
 


Source:
U.S. Department of the Interior