Volcanic Fissure Eruption
Volcano Terms and Definition


Lava Flows and Lava Tubes
40-minute video uses spectacular and unusual footage of erupting volcanoes from Hawaii and around the world to explain the features found in many of our volcanic national parks and monuments, and to show how they form. It presents up-to-date scientific ideas about lava flows: how they move, how they change, and how they create lava tubes





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. Local tribes people were the first to see the signs. "There was a flash of light from the sky,"





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

Eruptive fissure on southeast rim of Kilauea caldera, Hawai`i. This eruptive fissure was active briefly during an eruption in July 1974. Note prominent spatter ramparts on right, and subdued rampart on left, built by the ejection of lava along the fissure. The smooth texture of the surface on the lip of the fissure (lower right) is evidence that lava drained back into the fissure toward the end of the 1974 eruption.
Fissure
In geology, a fissure is a fracture or crack in rock along which there is a distinct separation; fissures are often filled with mineral-bearing materials. On volcanoes, a fissure is an elongate fracture or crack at the surface from which lava erupts. Fissure eruptions typically dwindle to a central vent after a period of hours or days. Occasionally, lava will flow back into the ground by pouring into a crack or an open eruptive fissure, a process called drainback ; sometimes lava will flow back into the same fissure from which it erupted.




Mauna Loa Volcano, Hawaii

Lava erupts from fissures high on the northeast rift zone of Mauna Loa in the early morning hours of July 6, 1975. These fissures fed several lava flows, the longest of which traveled 5.2 km northward toward Mauna Kea (in background).

Mauna Loa Volcano, Hawaii

This eruptive fissure broke out on the northeast rift zone of Mauna Loa about 15 hours after the eruption began in the summit caldera, about 15 km uprift (toward upper left). Initially about 1.6 km long, lava fountains along the fissure were soon restricted to six vent areas. These vents built a spatter rampart, a cinder and spatter cone, and a lava shield along the fissure. The most productive vent is in the upper left.

Kilauea Volcano, Hawaii
Lava fountains rise from two eruptive fissures in the first week of the Pu`u `O`o-Kupaianaha eruption of Kilauea Volcano. The fissures cut through forest and older lava flows on a remote section of the volcano's east rift zone.




Drainback on Kilauea Volcano. Lava fountains erupting from a fissure feed an `a`a flow that is pouring into an older crack (lower right) on the east rift zone of Kilauea.
Drainback

Lava will sometimes return to the subsurface by flowing into an open crack, fissure, or active vent, a process called drainback. Drainback is common in the late stages of an eruptive episode on Kilauea and Mauna Loa volcanoes, when lava reverses its normal direction of movement and flows back into the fissure or vent from which it was erupted.

Digtal Microscope



World of the Microscope
Science & Experiments Series
Fascinating, hands-on introduction to using microscopes, this book is packed with exciting projects which reveal the amazing detail of the world around us.




Young Learners Microscopes
Expose your child to the fascinating world of natural specimens as you examine an arachnid, a crustacean and other insects up-close. Grades K & up. Fully functioning microscope makes learning fun!

Volcano Glossary


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.

          

           

Leapfrog Learning Systems

  • Handheld computerized learning system
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Source:
U.S. Department of the Interior