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- 1. Volcano BY: MARIANNE ANTOINETTE CANETE & RENALYN ONATE GRADE 11 ABM-2
- 2. What is volcano? A volcano is a rupture in the crust of a planetary-mass object, such as earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Earths volcanoes occur because its crust is broken into 17 major, rigid tectonic that float on , softer layer in its mantle.
- 3. Definition of volcano -into the The definition of volcano is rupture in the earths crust where molten lava,hot ash,and gases from below the earths crust escape air.
- 4. What are the causes of volcano Volcanoes happen when magma rises to the surface of the earth, which causes bubbles of gas to appear in it. This gas can cause pressure to build up in the mountain, and it eventually explodes. When the magma bursts out nof the earth, it is called lava.
- 5. What are the three main volcanoes Composite volcanoes Shield volcanoes Dome (Acid Lava Cones )
- 6. COMPOSITE VOLCANOES Composite volcanoes, someyimes known as strato volcanoes, are step sided cones formed layers of ash and lava flows. The eruption from these volcanoes maybe pyroclastic flow rather than a flow of lava. A pyroclastic flow is a superheated mixtyre of hot string, ash, rock and dust.
- 7. Shield volcanoes Shield volcanoes are low with gently sloping sides and are formed from layers of lava. Eruption are typically non-explosive shield volcanoes produce fast flowing fluid lava that can flow for many miles. Eruption tend to be frequent but relatively gental. Although these eruption destroy property, death or injury to humans rarely occurs.
- 8. Dome (acid lava cones ) Acid lava is much thicker that lava which flows from shield volcanoes have much steeper sides than shield volcanoes. This is because the lava is thick and sticky. It cannot flow very far before ot cools and hardens. An example is puy de dome and the auverjne region of france which last erupted over 1 million years ago.
- 9. List of active volcanoes in Philippines. Mayon in albay is nthe most active volcano in the Philippines. Taal in batangas. Kanlaon in negros island Bulusan in sorsogon Smith in calayan. Hibok-hibok in camiguin. Pinatubo in zambales. Musuan in bukidnon.
- 10. Why are volcanoes important Volcanic eruption is responsible for releasing molten rock, or lava,from deep within the earth, forming new rock on the earths surface. But eruption also impact the atmosphere. The gases and dust particles thrown into the atmosphere during volcanic eruption have influences on climate.
- 11. Positive and Negative effect of volcanoes. Positive I guess the main good effect that volcanoes have on the environment is to provide nutrients to the surrounding soil. Volcanic ash often contains minerals that are beneficial to plants, and if it is very fine ash it is able to break down quickly and get mixed into the soil Negative effects of volcanoes eruption occurring close to human settlements may spill and destroy lives and property.
- 12. Mayon volcano is a sacred and active stratovolcano in the province of albay in bicol region, on the large island of Luzon in the Philippines .
- 13. Taal volcano taal volcano is a complex volcano located on the island of Luzon in the Philippines.it is the second most active volcano in the Philippines with 33 historical eruptions.
- 14. Kanlaon volcano is an active stratovolcano on the island of negros, Philippines. It is the highest point in negros as well as the whole visayas, with an elevation of 2,465 m above sea level.
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- 16. URL https://www.google.com/search?clients=ms-android- Samsung&source=android- home&source=hp&ei=HK4iXbvnHPiAr7wuqR2AY&q=mayon+vocano&oq =mqyon+volcano&gs I=mobile-gws-wiz-hp.3..46i131i275j0l7 . 1083.11337 .. 119220.0..3.1016.9019.2- 3j2j2j2j5j10.1.0..46i131i0i131j46.DEgQ6KJPFus
- 17. Geography lesson: what is volcano