Lava This presentation will discuss two questions which are How is Lava Produced? And What hazards/dangers does lava pose? It will also study one example of a Lava Flow in Hawaii. Lava is molten rock expelled by a volcano during erupting. It is produced/ formed in the interior of planets including Earth and their satellites. When the lava is first erupted from the vent in a volcano otherwise known as the volcanic vent‚ lava is a liquid and varies from 700°C to 1‚200°C. Although lava is
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Heimaey. The town was mostly evacuated over the next few days and the lava slowly flowed towards town and the mouth of the harbor for the next seven months. Vestmannaeyjar is the only good harbour in that part of Iceland‚ and was the base for a large fishing fleet that produces a significant part of Iceland’s GNP. As the lava threatened to overrun the town and close off the harbor‚ a decision was made to try to slow and divert the lava by cooling it with sea water. The idea was initially scoffed at‚ but
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The Lava Pit One time in Hawaii‚ in 1888‚ there was a small village just next to a little beach. Not far from the village‚ there was a huge “lava pit.” Scientists believed that it was just a volcano that had formed underground and only the opening at the top could be seen from the surface. The lava pit had always been filled with lava‚ and people wondered if it would ever erupt. For many years‚ tourists have visited Hawaii and come to see and take pictures of the lava pit. Unfortunately‚ many people
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would like to visit Lava Beds National monument located in northeastern California. It holds many new learning experiences‚ many new sights to see‚ and possibly might change their career. A surreal landscape sculpted by molten earth‚ Lava Beds National Monument contains volcanic tablelands punctuated by cinder cones and spatter cones‚ plus more than 700 caves. These strange features were formed when the outer edges of flowing lava began to cool‚ forming tubes. When molten lava stopped flowing‚ hardened
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LAVA CAVES Lava caves (or Lava tubes) are created when lava‚ emitted from the vent area‚ spreads in the path of least resistance. The outer layers of the lava harden‚ while the interior forms horizontal conduits that channel the advance of the flow. I was able to stoop through these conduits in amazement. CINDER/SCORIA CONES Cinder cones are simple volcanoes which have a bowl-shaped crater at the summit and rarely rise more than a thousand feet above their surroundings. They usually are created
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How does lava temperature impact viscosity and velocity? The higher the temperature the lower the viscosity which allows it to develop a smooth surface skin‚ but this is quickly broken up by flow of molten lava‚ it creates a rough‚ clinkery surface. The lower the temperature of the magma the higher the viscosity which allows the lava to travel down the slope. In the group the average velocity was 0.91 cm/s . How the “lava” flowed was in a high viscosity and a low velocity because the “lava” was cold
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Volcanoes are big erupting mounting that shoot out hot lava/magma. Volcano eruptions produce a lot of toxic gases which can damage the environment. When a volcano is about to erupt there is rain‚ thunder‚ and lightning. Volcanoes can also be bigger or smaller than a mountain. There are many different types of volcanoes that cause destruction throughout the entire world. Volcanoes occur all over the world anytime of the day. Volcanoes occur at the mid-ocean ridges because they are divergent plate
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at the top and have low‚ sloping sides. This type of volcano is caused by slow‚ basaltic lava flows. Cinder cones are cone shaped volcanoes some are no more than a few meters and others get as big as high as 610 meters sometime more. Most of the tallest volcanoes are composite volcanoes. These form from quiet eruptions of fluid lava followed by explosive eruptions of viscous lava. How is Magma turned into Lava? Extremely high temperature and pressure cause the rock to melt and become liquid rock
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Our project is making a lava lamp in a bottle. My group members are Erik Duarte‚ Isaac Sanchez‚ Kenneth Loya‚ and Nick Mahan. Our question was can you make a lava lamp out of household items. Our hypothesis was you can if you find the right items. We were right you can if you put vegetable oil on top of water and then put the food coloring in and the ad Alka-Seltzer. Our background info is that vegetable oil is used to cook‚ water you used to drink and stay alive‚ food coloring is used to make
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such an beautiful sight! If only we could visit there. Could we? Maybe so. In 1925 President Calvin Coolidge declared Lava Beds a national monument which I understand why. Even though its a "secret" park of volcanic rocks and many underground caves it is full of history and geological wonders. As a student at Atkinson County Middle School I believe that going to the Lava Beds National Monument would be and excellent opportunity for us eighth graders to learn about how it was created and formed
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