Volcanoes Presentation PDF

VOLCANOES PRESENTED BY: MS.ANGELICA LANDAYAN WHAT DO YOU ALREADY KNOW ABOUT VOLCANO?  MT. KANLAON Erupted at 3:03 p.m. on Monday, December 9, 2024. The eruption produced a voluminous plume that rose to 3,000 meters above the vent and drifted west-southwest. Located: Negr...

VOLCANOES PRESENTED BY: MS.ANGELICA LANDAYAN WHAT DO YOU ALREADY KNOW ABOUT VOLCANO?  MT. KANLAON Erupted at 3:03 p.m. on Monday, December 9, 2024. The eruption produced a voluminous plume that rose to 3,000 meters above the vent and drifted west-southwest. Located: Negros Occidental Mindoro kanlaon volcano is now on ALERT LEVEL 3.  VOLCANISM All volcanic activities and phenomena which build up surface features. Volcanic processes are rapid and dramatic  VOLCANOES Volcanoes are mountains, hills, or any vent or opening on the earth's crust through which hot materials such as lava, gases, vapors, and fragmented materials are expelled. Pacific Ring Of Fire (Japan, Philippines, Aleutian Island, North America, Central America and South America)  HOW IS A VOLCANO FORMED? Inside the earth, heat and pressure causes rock to melt and turn to magma Magma is forced up to the surface of the earth because it is less dense. It flows out through an opening called vent The lava cools quickly to form layers.  EARTH Thickness of the earth crust range from 5 to 60 kilometers. 7 majors, 152 smaller pieces (tectonic plates) Magma (molten rocks inside the surface) Lava (molten rocks outside the surface)  CLASSIFICATION OF VOLCANOES Shield Cinder cone Stratovolcano (composite)  SHIELD VOLCANO Extrudes highly fluid lava Are huge, gently sloping volcanoes built of very thin lava spreading out in all directions from a central vent. Mauna loa in Hawaii (last eruption1984) SHIELD VOLCANO  CINDER CONE Also known as Scoria Cones Symmetrical, cone-shaped, have steep slopes and cluster around larger volcanoes. “Parasitic cone” Only about 91 meters tall Rising more than 366 meters Examples: Mt. Paricutin in Mexico and Krakatoa in Indonesia (bowl shaped crater) CINDER CONE  STRATOVOLCANO Also known as Composite volcano Alternating lava flows, ash, lava and blocks of unmelted stone. Bigger than cinder cone usually, 2,438 meters high. Example: Mt. Mayon In The Philippines, And Mt Fuji In Japan, In USA, Mt. Shasta In California, Mt Hood In Oregon, Mount St. Helens and Mt. Rainier In Washington. COMPOSITE VOLCANO  ACTIVE AND INACTIVE VOLCANO Active volcanoes in the Philippines, as categorized by the Philippine Institute of Volcanology and Seismology (PHIVOLCS), As of 2012, PHIVOLCS lists 23 active volcanoes in the Philippines, 21 of which have historical eruptions and two (2) strongly fumarolic volcanoes. (Mt. Makiling & Mt. Kanlaon)  VOLCANIC ERUPTION A volcanic eruption is a remarkable natural event that signals imminent great anger. The mud flowing may obstruct rivers depriving channels of normal runoff. Volcanic gases, when released in huge amounts are threats to human lives and other things. Lava may destroy structures and crops, and may contaminate water.  TECTONIC PLATES Divergent Movement- Plates Moving Away Each Other Convergent Movement-plate Moving Toward Each Other One Plate Sinking Under Another- Subduction Zone WHAT HAPPENS WHEN A VOLCANO ERUPT?  QUESTION WHAT HAPPENS WHEN YOU OPEN A BOTTLE OF WARM SODA POP THAT HAS BEEN SHAKEN?