Volcanic Assignment

Melanie Brooke Yeakley 1. What is the myth from which ventes get their name? It comes from the little island of Vulcano in the Mediterranean Sea off Sicily. Centuries ago, the people living in this country believed that Vulcano was the chimney of the think over of Vulcanthe blacksmith of the Roman gods. They thought that the animated lava fragments and clouds of dust erupting from Vulcano came from Vulcans forge as he beat out thunderbolts for Jupiter, king of the gods, and weapons for Mars, the god of war. 2. What is the contravention between magma and lava? Molten rock below the surface of the Earth that rises in volcanic vents is known asmagma, but after it erupts from a volcano it is calledlava 3. What argon the main types of volcanoes? cinder cones, composite volcanoes, shield volcanoes, and lava domes. 4. The Hawaiian Islands be what type of volcano? How tall is Mauna Loa? Shield volcanoes 13,677 feet above sea aim 5. What type of volcanoes are the most violent? Plinian 6 . Are all eruptions akin? Describe the type of eruption of Mt. St Helens? No It involves the explosive ejection of comparatively viscous lava, it can send ash and volcanic gas tens of miles into the air.The resulting ash fallout can affect large areas hundreds of miles downwind. Fast-moving deadly pyroclastic flows 7. The Pacific dodge of Fire is an example of volcanoes that hold at ___________ _____________. Plate boundary The Hawaiian Islands are examples of ____-________ ______________. Intra plate 8. What are some of the common methods used to need volcanic related phenomena? Measurement of changes in the shape of the volcano circumstantial determination of the location and magnitude of earthquakes by a well-designed seismic interlock Measurement of changes in volcanic-gas composition and in magnetic field 9.Go to first appearance to granite and play with the clickable map. This photo shows an excellent example of a phaneritic (coarse grained) texture. These type of text ures form from the slow cooling of plutonic or intrusive igneous rocks. What is the sound mineral? Igneous rock potassium feldspar 10. Why is granite analogous ice woof? The analogy is humorous, but good. Both ice cream and granite start out as liquids which when cooled became solid, and both will melt over again if the temperature gets hot enough. Bothice creamand granite choke crystalline when they become solid. Part 2 Most of these questions can answered using your text. Chapter 6) 11. What two criteria are used to identify igneous rocks? Chemical content and grain size 12. What distinguishes mafic from felsic igneous rocks? (hint think about chemistry) Felsic rocks have more quartz in them. Mafic rocks tend to contain magnesium-rich minerals like olivine and pyroxene. 13. What are three controls on the melt down of rock material? Mineral composition, temperature, pressure 14. What are the tectonic settings associated with the administration of basaltic composition magmas ? Basaltic composition magmas occur in oceanic hotspots where a mantle plume interacts with oceanic lithosphere. 5. What is the tectonic setting for the establishment of intermediate composition magmas? Convergent boundaries 16. How would you distinguish between an intrusive and volcanic igneous rock? Intrusiveigneous rocks cooled below the surface of the planet, volcanicrocks are formed from magma at or above the surface of the planet, 17. What is magmatic specialty? The process by which chemically different igneous rocks, such as basalt and granite, can form from the same initial magma 18. Which volcanic hazard is the guide cause of death? (section 6. 8) Asphyxiation as peopled breath hot gas and ash