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  • Diagram of two tectonic plates in the Earth's crust shifting in opposite directions. Caption: and energy is released, resulting in an earthquake.

    Through descriptions of actual volcanic and earthquake occurrences, students will discover how these dynamic forces affect the world. This video discusses the nature and causes of earthquakes and volcanoes. Other topics covered include molten rock, magma, lava, cinder cone, shield volcano, composite volcano, caldera, Ring of Fire, seismic waves, seismograph, and Richter scale.

    (Source: DCMP)

  • Narrow paved path spiraling to the top of a rocky conical structure. Caption: a great fissure opened up in Central Idaho

    Craters of the Moon is a vast ocean of lava flows with scattered islands of cinder cones and sagebrush. Idaho’s Craters of the Moon formed during eight major eruptive periods between 15,000 and 2,000 years ago. The monument continues to go through subtle changes caused by natural and human processes.

    (Source: DCMP)

  • Pine Reproduction 101. Pine tree, a male pinecone, and a female pinecone. Female pinecones have a long protrusion from the center and pine needles around the edges. Caption: Each tree has female pine cones and male pine cones.

    Why does everything turn yellow in spring? Pine trees produce yellow pollen every year at this time. This annoying ritual is necessary for pine trees to reproduce. Part of the "Seasonal Science" series.

    (Source: DCMP)

  • Person in a reflective heat-protecting suit crouches next to a pit of glowing lava. Caption: (narrator) Protected now, he moves closer and fishes for fresh lava.

    Join vulcanologists as they venture into the heart of Ethiopia's Erta Ale, the oldest live volcano in the world, to ply its secrets of creation. Their mission to sample molten rock from the lava lake requires hauling more than 1000 pounds of gear to the crater, and then rappelling into the active cone. Blistering heat and sulfur stench greet them as they battle this formidable boiling mountain for the sake of science. Segment of video from Wild Chronicles Series.

    (Source: DCMP)