Science

Question 1

1.What does PHIVOLCS stands for?
a. Philippine Institute of Volcanology and System (PHIVOLCS)
b. Philippine Institute of Volcanic and Seismology (PHIVOLCS)
c. Philippine Institute of Volcanology and Seismology (PHIVOLCS)
d. Philippine Institute of Volcanoes and Systems (PHIVOLCS)

Answer 1

C

Question 2

2. Which of the following is NOT a common volcanic cone shape?
   a. Cinder
   b. Spiral
   c. Composite
   d. Shield

Answer 2

B

Question 3

3. What is a natural opening in the surface of the Earth where molten rocks, hot gases, smoke, and ash are ejected?
   a. Mountain
   b. Hill
   c. Valley
   d. Volcano

Answer 3

D

Question 4

4. Which is a warning sign of volcanic eruption?
   a. ground deformation
   b. increased seismic activity
   c. gas emission
   d. All are warning signs.

Answer 4

D

Question 5

5. Which volcanoes have no record of eruption or have not erupted for the last 10,000 years?
   a. Inactive
   b. Active
   c. reactive
   d. None of the given choices

Answer 5

A

Question 6

6. Which of the following is NOT an indicator of volcanic eruption?
   a. Weather patterns
   b. Release of different gases from the volcano
   c. Earthquake frequency
   d. Swelling or changing of shapes of the volcano

Answer 6

A

Question 7

7. What local constellation signifies the start of rainy season in the Philippines?
   a. Balara
   b. Balatik
   c. Buwaya
   d. Lepu

Answer 7

C

Question 8

8. How much is the drop of the air temperature in every 1000 m?
   a. 2.5°C b. 3.5°C c. 4.5°C d. 6.5°C

Answer 8

D

Question 9

9. Why can we say that geothermal energy is sustainable?
   a. Because it can be used anywhere on Earth.
   b. Because it generates greenhouse gases.
   c. Because there is a limited supply.
   d. Because it may cause global warming.

Answer 9

A

Question 10

10. Where can geothermal power plant be built?
    a. Near an ocean b. Near a fault line
    c. Near a mountain d. Near a volcano

Answer 10

D

Question 11

11. Which of the following is NOT a factor that influences the viscosity of magma?
    a. amount of gas
    b. mass
    c. silica content
    d. temperature

Answer 11

B

Question 12

12. What is defined as the ability of the material’s resistance to flow?
    a. Fluidity
    b. Viscosity
    c. Silica Content
    d. Gas Composition

Answer 12

B

Question 13

13. What type of volcanic eruption is very violent due to the contact between water and magma?
    a. Phreatomagmatic
    b. Plinian
    c. Strombolian
    d. Vulcanian

Answer 13

A

Question 14

14.What type of volcanic eruptions are characterized by tall eruption columns with pyroclastic flow and ashfall tephra?
a. Phreatomagmatic
b. Plinian
c. Strombolian
d. Vulcanian

Answer 14

D

Question 15

15. Why is it important to determine the viscosity of magma?
    a. to learn its composition
    b. to give us a signal of its eruption
    c. to measure other factors
    d. to determine its explosiveness

Answer 15

A

Question 16

16. Which constellation helps sailors to navigate at the sea?
    a. Pisces
    b. Polaris
    c. Ursa Major
    d. Sagittarius

Answer 16

B

Question 17

17. Why do mountain climbers bring thick jackets when they go up in the mountain?
    a. the temperature increases as the altitude increases
    b. the temperature decreases as altitude increases
    c. the temperature remains the same as altitude increases
    d. the temperature decreases as the altitude decreases

Answer 17

A

Question 18

18. What does it mean by lower viscosity magma?
    a. Lower silica content magma
    b. Higher temperature magma
    c. Higher gas content magma
    d. None of the above

Answer 18

B

Question 19

19. Which side of the mountain often receives most precipitation?
    a. leeward side
    b. windward side
    c. rain shadow
    d. peak

Answer 19

B

Question 20

20. What is a fast-moving flow of solidified lava pieces, volcanic ash, and hot gases?
    a. Fragments
    b. Pyroclastic
    c. Fissure
    d. Ash columns

Answer 20

B

Question 21

21. What are the required factors for an explosive volcanic eruption?
    a. Thick magma
    b. high gas pressure
    c. High silica content concentration
    d. All are required factors.

Answer 21

D

Question 22

22. Which one shares similarities with Vulcanian eruption?
    a. Phreatomagmatic
    b. Strombolian
    c. Hawaiian
    d. Pelean

Answer 22

D

Question 23

23. What type of eruption is the most explosive?
    a. Phreatic
    b. Plinian
    c. Strombolian
    d. Vulcanian

Answer 23

B

Question 24

24. What is the temperature of a low viscous and low gas content magma?
    a. Higher
    b. Lower
    c. Moderate
    d. does not affect viscosity and gas content

Answer 24

A

Question 25

25. What do you call the area below the crust where magma is stored? a. magma chamber b. Magma crater c. magma dome d. magma vent

Answer 25

A

Question 26

26. Which of the following does not contribute global warming? a. illegal fishing b. incineration of garbage c. mining activities d. reforestation

Answer 26

D

Question 27

27. Which constellation is prominent in the northern hemisphere during spring? a. Andromeda b. Lynx c. Orion d. Ursa Major

Answer 27

C

Question 28

28. Which of the following is a famous example of a shield volcano? a. Mount Amorong b. Mount Hibok-hibok c. Mount Mayon d. Mount Apo

Answer 28

A

Question 29

29. Which does not belong to the group? a. climatic effect b. famine and disease c. lahar d. tsunamis

Answer 29

B

Question 30

30. Good can come from a volcanic eruption. Which of the following is a disadvantage of an eruption? a. fertile soil b. increased tourism c. geothermal energy d. land destroyed

Answer 30

D