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1. Which of these is NOT a sign of impending volcanic eruption? A. Crater glow due to presence of magma at or near the crater. B. Decrease in the temperature of hot springs, wells, or crater lake near the volcano 6. 10 11 12 13 O0© 14 O© 15 O00 C. Increase in the frequency of volcanic quakes with rumbling sounds; occurrence of volcanic tremors D. Increase steaming activity; change in color of steam emission from white to gray due to entrained ash.

1. Which of these is NOT a sign of impending volcanic eruption? A. Crater glow due to presence of magma at or near the crater. B. Decrease in the temperature of hot springs, wells, or crater lake near the volcano 6. 10 11 12 13 O0© 14 O© 15 O00 C. Increase in the frequency of volcanic quakes with rumbling sounds; occurrence of volcanic tremors D. Increase steaming activity; change in color of steam emission from white to gray due to entrained ash.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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000 20 000 21 O Test I. Multiple Choice: Select the BEST answer by shading the letter of your choice on the Zip grade. 1. Which of these is NOT a sign of impending volcanic eruption? A. Crater glow due to presence of magma at 7. 00O 22 @ 8. 0©0 23 @ 000 24 10 OO©0 25 @ 11 O000 26 O or near the crater. B. Decrease in the temperature of hot springs, wells, or crater lake near the volcano 12 @0 13 O0©0 28 @ 14 O©0 29 O 15 O000 30 27 A C. Increase in the frequency of volcanic quakes with rumbling sounds; occurrence of volcanic tremors D. Increase steaming activity; change in color of steam emission from white to gray due to entrained ash. 2. Taal volcano in Batangas exhibits phreatic or hydrothermal eruption. Which of the following statements describe a phreatic eruption? A. It is a violent eruption due to the contact between water and magma. B. It is an excessively explosive type of eruption of gas and pyroclastic. C. It is a periodic weak violent eruption characterized by fountain of lava. D. It is characterized by tall eruption columns that reach up to 20 km high with pyroclastic flow and ash fall tephra. 3. Which of these statements is INCORRECT? A Vulcanian eruption is a silent eruption due to oozing lava. B. Strombolian eruption is an eruption characterized by fountain lava. C. Phreatic eruption is a short lived-eruption and maybe an onset of a large eruption. D. Phreatomagmatic eruption is an eruption resulted to sideway emission of pyroclastic materials. 4. What part of the volcano serves as the region under the surface of the Earth where hot molten is collected? magma A. Lava flow B. Magma chamber C. Main vent D. Secondary vent 5. What is the term used to represent the opening of the volcano where magma comes out? A. Crater C. Summit D. Vent B. Magma chamber Juno 16 1001 Yuras the second largest of the I 32 Sclom
Transcribed Image Text:000 20 000 21 O Test I. Multiple Choice: Select the BEST answer by shading the letter of your choice on the Zip grade. 1. Which of these is NOT a sign of impending volcanic eruption? A. Crater glow due to presence of magma at 7. 00O 22 @ 8. 0©0 23 @ 000 24 10 OO©0 25 @ 11 O000 26 O or near the crater. B. Decrease in the temperature of hot springs, wells, or crater lake near the volcano 12 @0 13 O0©0 28 @ 14 O©0 29 O 15 O000 30 27 A C. Increase in the frequency of volcanic quakes with rumbling sounds; occurrence of volcanic tremors D. Increase steaming activity; change in color of steam emission from white to gray due to entrained ash. 2. Taal volcano in Batangas exhibits phreatic or hydrothermal eruption. Which of the following statements describe a phreatic eruption? A. It is a violent eruption due to the contact between water and magma. B. It is an excessively explosive type of eruption of gas and pyroclastic. C. It is a periodic weak violent eruption characterized by fountain of lava. D. It is characterized by tall eruption columns that reach up to 20 km high with pyroclastic flow and ash fall tephra. 3. Which of these statements is INCORRECT? A Vulcanian eruption is a silent eruption due to oozing lava. B. Strombolian eruption is an eruption characterized by fountain lava. C. Phreatic eruption is a short lived-eruption and maybe an onset of a large eruption. D. Phreatomagmatic eruption is an eruption resulted to sideway emission of pyroclastic materials. 4. What part of the volcano serves as the region under the surface of the Earth where hot molten is collected? magma A. Lava flow B. Magma chamber C. Main vent D. Secondary vent 5. What is the term used to represent the opening of the volcano where magma comes out? A. Crater C. Summit D. Vent B. Magma chamber Juno 16 1001 Yuras the second largest of the I 32 Sclom
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