TYPES OF VOLCANIC ERUPTION.pptx
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This document discusses the different types of volcanic eruptions. It begins by stating the learning objectives, which are to identify, describe, and illustrate the types of volcanic eruptions using a concept map. It then provides definitions and examples for five types of eruptions: phreatic/hydrothermal, phreatomagmatic, Strombolian, Vulcanian, and Plinian. Phreatic eruptions involve hot rocks interacting with water. Phreatomagmatic eruptions result from magma interacting with water. Strombolian eruptions have explosions of lava fragments. Vulcanian eruptions have tall explosions lasting seconds to minutes. Plinian eruptions are the most explosive
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This document discusses different types of volcanoes. It provides descriptions of cinder cones, shield volcanoes, composite volcanoes, and lava domes. Cinder cones are symmetrical cones up to 1,200 feet tall formed from a single vent. Shield volcanoes are very broad with shallow slopes and can be over 30,000 feet tall. Composite volcanoes are also known as stratovolcanoes, ranging from 1-10 km wide and up to 10,000 feet tall with steep slopes. They have explosive, dangerous eruptions. Lava domes are much smaller formations that occur when lava is too viscous to flow, piling up in a dome shape around 100 feet tall. Examples of each type
Volcanoes Grade 9
This document provides information about volcanoes and volcanic eruptions. It begins with a 10 question pre-assessment about volcanic characteristics and types. It then discusses the classification of volcanoes as active or inactive. Key details are provided about iconic Philippine volcanoes like Mayon and Taal. The different types of volcanic eruptions such as Plinian and Strombolian are described. Finally, the document discusses the factors that affect eruption style and provides signs of an impending eruption.
EFFECTS OF VOLCANIC ERUPTION.ppsx
Here are the answers:
A.
1. A
2. B
3. D
4. A
5. B
6. B
7. A
8. A
9. D
10. B
B.
1. No, because it is dangerous and can erupt anytime destroying lives and properties.
2. Tremors, swelling of ground, release of gases, increase in temperature.
3. Formation of landforms like bigger volcano, destruction of volcano shape, alteration of river systems by pyroclastic deposits and lahar.
C. (Diagram of labeled volcano parts is provided)
Volcano-Eruption.pptx
The document discusses the nature and hazards of volcanic eruptions, identifying hazards like lava flows, pyroclastic flows, tephra falls, and lahars. It also outlines warning signs of an impending eruption and recommendations for preparing for and responding to an eruption, including developing evacuation plans and protecting oneself from ashfall. Communities near active volcanoes in the Philippines monitor warning levels and have plans to evacuate areas at risk from an eruption.
Types of Volcano.pptx
This document provides information about volcanoes and volcanic eruptions. It begins with a pre-assessment quiz about volcanic characteristics and eruptions. It then discusses the different types of volcanoes including shield, cinder cone, and composite volcanoes. The document outlines the primary factors that affect volcanic eruptive styles such as magma temperature, composition, and gas content. It also describes the different types of eruptions from phreatic to plinian. Finally, it discusses how volcanoes can be used as sources of geothermal energy and provides signs of an impending volcanic eruption.
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This document provides information about a station-based volcano education program. The stations cover topics like classifying volcanoes, eruption types, magma composition, and volcanic hazards and benefits. At each station, students fill out worksheets or do activities to learn about parts of volcanoes, what causes eruptions, how silica and water content determine explosivity, different lava and pyroclastic material types, and examples of shield, cinder cone, and composite volcanoes. Math problems calculate totals, differences, distances, times, costs, and rates related to volcanic eruptions, ash and lava flows, and operating robots. The goal is to help students understand volcanoes through hands-on activities at multiple informative stations.
volcanoes-141105193527-conversion-gate02.pdf
Volcanoes form when magma rises from below the Earth's surface. There are two main types of volcanoes: shield volcanoes and stratovolcanoes. Shield volcanoes are wide and gently sloping due to fluid lava flows, while stratovolcanoes are steep and tall with layers of hardened lava and ash. The viscosity of magma depends on its temperature, composition, and gas content, and determines the type of eruption from a volcano. Active volcanoes are currently erupting or have erupted in the last 10,000 years, while dormant and extinct volcanoes have not erupted recently or in over 10,000 years respectively.
volcano.pptx
Volcanoes form at plate boundaries and hot spots. The type of eruption depends on the magma composition and amount of trapped gases. Shield volcanoes produce basaltic lava flows in quiet eruptions building wide slopes. Cinder cones erupt explosively throwing granitic ash into steep cones. Composite volcanoes have characteristics of both and can erupt violently or quietly. Examples given are Mount St. Helens, Pinatubo, and Krakatau which all caused significant destruction and loss of life during powerful eruptions. Scientists monitor volcanoes for signs of impending eruptions like earthquakes or gas changes.
volcano
The document discusses volcanoes, including:
- Volcanoes form when magma is forced from below the Earth's surface. There are currently around 50-60 volcanic eruptions per year.
- The main types of erupted material are lava and ash. The three main types of volcanoes are cinder cones, shield volcanoes, and composite volcanoes.
- Composite volcanoes are the most explosive and dangerous type, examples being Mount St. Helens and Mount Fuji. Large eruptions can have devastating effects like pyroclastic flows and ash falls.
volca.pptx
Volcanoes form at plate boundaries and hot spots. The type of eruption depends on the composition of the magma and amount of trapped gases. Shield volcanoes produce basaltic lava flows in quiet eruptions to form wide gentle slopes. Cinder cone volcanoes explosively eject tephra in steep slopes. Composite volcanoes have violent or quiet eruptions of basaltic or granitic lava, forming steep layered slopes. Major examples discussed are Kilauea, Paricutin, Mount St. Helens, Pinatubo, and Krakatau volcanoes.
Holy Smokes-Its a Volcano.pptx
Volcanoes form at plate boundaries and hot spots where magma rises from below the Earth's crust. There are three main types of volcanoes - shield volcanoes which are wide and gently sloping due to low viscosity basaltic lava flows, cinder cone volcanoes which are steep-sided due to explosive eruptions of thicker granitic lava, and composite volcanoes which have characteristics of both types. Factors like the amount of trapped gases and magma viscosity determine eruption styles from quiet effusions to violent explosions. Major volcanic hazards include lava flows, ash falls, pyroclastic flows, landslides, and tsunamis. Scientists monitor volcanoes for warning signs of impending eruptions.
Holy Smokes-Its a Volcano.ppt
Volcanoes form at plate boundaries and hot spots where magma rises from below the Earth's crust. There are three main types of volcanoes - shield volcanoes which are wide and gently sloping due to low viscosity basaltic lava flows, cinder cone volcanoes which are steep-sided due to explosive eruptions of thicker magma, and composite volcanoes which have characteristics of both types. Factors like the amount of trapped gases and magma viscosity determine eruption styles from quiet effusions to violent explosions. Major volcanic hazards include lava flows, ash falls, pyroclastic flows, landslides, and tsunamis. Scientists monitor volcanoes for warning signs of impending eruptions.
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- 1. WATCH ME!
- 3. Learning Objectives: At the end of the lesson the learners should be able to; a. identify the types of volcanic eruptions; b. describe the types of volcanic eruptions; and c. make a concept map showing the types of volcanic eruption.
- 4. WORD PUZZLE!
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- 9. Taal Volcano 1591 and 1641, 1707, 1715 Didicas Volcano 1773 Hibok-hibok Volcano 1827
- 10. Phreatomagmatic √ A violent eruption resulting from the interaction magma with water.
- 12. Taal Volcano -1572 -September 21, 1716, -March 26, 2022
- 13. Strombolian √ The least violent types of explosive eruptions. √ Strombolian eruptions have explosions causing a shower of lava fragments.
- 15. Taal January 31, 1968; October 29, 1969 The only Strombolian eruptions of Taal Volcano were recorded on these dates, which both happened at the Mt Tabaro crater.
- 16. Vulcanian √ tall eruptions, lasting seconds to minutes. √ Ash columns can be up to 20 km in height.
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- 19. Plinian √ The most explosive and largest type of volcanic eruptions of gas and pyroclastics. √ Plinian eruptions have 20 to 35 km tall columns .
- 21. Taal Volcano May 15 to December 5, 1754 This incident is considered Taal Volcano’s biggest eruption yet and lasted almost 7 months. It buried 4 towns in Batangas under ash, volcanic rocks, and water. Pinatubo Volcano 1991- Jun 9- Sept 4. Mayon Volcano 1814 Feb 1
- 22. MAKE ME!
- 25. QUIZ: IDENTIFICATION Directions: Read carefully and answer the following. 1. A type of eruption that is driven by the heat from magma interacting with water. 2. This type of eruption is small to moderate explosive eruptions, that are lasting seconds to minutes. 3. A type of an eruption thatresulting from the interaction of new magma or lava with water and can be very explosive. 4. It is the most explosive and largest type of volcanic eruptions with a high rate of magma discharge sustained for minutes to hours. 5. These type of eruption are the least violent and have fire fountains and lava flowsor have explosions causing a shower of lava fragments.