B. Caldera: largest A 4. Taal volcano erupted in the year 1965 due to contact of water and hot rocks. How car volcanic eruption be classified? A. Phreatic B. Vulcanian C Strombolian D. Phreatomag 5. It is characterized by tall eruption columns that reach up to 20 km high with pyroclastic and ashfall tephra like that of Paricutin Volcano in Mexico. A Phreatic B. Vulcanian C Strombolian D. Phreatomag 6. Which of the following analogy is correct about volcanic eruptions and its cause? A. Phreatic: hot rock and magma C. Phreatic: hot rock and pressure B. Phreatomagmatic: magma and water D. Phreatomagmatic: pressure and 7. Which characteristics of magma mainly determines its explosiveness? A Color B. Amount C Temperature D. Silica Conte 8. Why volcanoes erupt? I. Because of moving tectonic plates II. Because of earthquake III. Because of the movement of magma A. I BI! Cland I D. I, II, at volcanoes have very sticky and thick lava, which can make the explosive when they erupt. A. Composite C. Shield B. Cinder D. Composite, Cinder, and Shie 10 volcanoes have a lava that is extremely fast and can cover large are uickly A. Composite C. Shield B. Cinder D. Composite, Cinder, and Shie 11. What is/are the factor/s that affect/s volcanoes' eruptive style? Magma's temperature Il Chemical composition 11 Amount of dissolver 9.
