PPT-Volcanic Eruptions

Chapter 9 Section 1 Volcanic Eruptions Volcanoes areas of Earths surface through which magma and volcanic gases pass In seconds a volcanic eruption can turn an entire mountain into a cloud of ash and rock. The volcanic aerosol cloud forms in several weeks by the conversion of sulfur dioxide SO to sulfate aerosol and its subsequent microphysical transfor mations The resulting cloud of sulfate aerosol particles with a residence time of a couple of years What is natural disaster ? . . It is natural happening that will have a negative effect on people or the environment.. Earthquake . . An earthquake is a phenomenon that results from a . Chapter 9. Lesson 2. Videos. http://video.nationalgeographic.com/video/kids/forces-of-nature-kids/volcanoes-101-kids/. Volcanoes 101 National Geographic.. https://www.youtube.com/watch?v=cQMB7o3SXOw. Volcanic Eruptions. 1. Why Volcanoes Erupt:. The F of expanding gas builds and pushes magma through the vent. 2. Major Factors in Eruptions:. a. The amount of trapped gas. CO. 2. and Sulfur. b. Silica Content. Earth Science Fall . 2012 . Vocabulary: . aa. – jagged chunks of lava formed by rapid cooling on the surface of the lava flow . Vocabulary:. Caldera- large basin-shaped depression formed when an explosion destroys the upper part of a volcanic cone or when the magma chamber below a volcano is emptied during an eruption. More than 2,000 years ago, Pompeii was a busy Roman city near the sleeping volcano Mount Vesuvius. People did not see Vesuvius as much of a threat. Everything changed when Vesuvius suddenly erupted and buried the city in a deadly blanket of ash that was almost 20 ft. thick!. Chapter 9 . Section 1. Volcanic Eruptions. During an eruption . magma. is forced to the Earth’s surface. Magma. – molten rock below the Earth’s surface. Lava – magma that . flows. on the Earth’s surface. Matthew Toohey. 1. Kirstin . Krüger. 1,2. , . Claudia . Timmreck. 3. , . Hauke . Schmidt. 3. 1 . GEOMAR. , Helmholtz Centre for Ocean Research Kiel, Germany. 2 . Now at . University . of Oslo, Norway. Learning . Targets. Compare the types of volcanic eruptions. Describe a method for predicting volcanic eruptions. Volcanic Eruption. Magma collects in . magma chamber. Hot magma . expands. .  creates . Volcanoes. Volcano:. mountain that forms in Earth’s crust when molten material (magma) reaches the surface. . Remember, . magma . is molten rock below ground; . lava. is molten rock at the surface. . Definition. . An adverse . cutaneous. drug eruption is defined as . an undesirable . cutaneous. manifestation resulting from the administration of a particular drug and may result from its overdose, predictable side effects or unanticipated adverse manifestations.. (ENSO) andincrease of the concentration of the greenhouse gases are the mainforcing factorsin the evolution of the Earth climate. Therefore, a sizeable amount ofresearch isdevoted to assess the impact Maga. chamber pipe vent. Lavaflow. crater extinct. Pyroclastic flow dormant geyser. What is a Volcano?. A volcano is usually a cone shaped mountain or hill that opens downward to a pool of molten rock below the surface of the earth.. to September 22. 1. Wk. 2 Day 1. Before: Question of the Day. What 3 factors control the style of a volcanic . eruptions?. During: Notes. After: Exit Slip. 2. Three Types of Volcanoes. Shield. Cone. Composite.