Volcanoes Quiz 11 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. The pocket beneath a volcano where magma collects?

Correct Answer: C) Magma chamber.

2. Lava is .....

Correct Answer: A) Molten rock above the earth's surface.

3. This type of volcano has MOSTLY NONEXPLOSIVE eruptions

Correct Answer: C) Shield.

4. When is a volcano considered extinct?

Correct Answer: A) When it is cut off from its magma supply.

5. Energy derived from water that has been heated by magma underground is

Correct Answer: A) Geothermal energy.

6. Where would you probably see something steep?

Correct Answer: C) In the mountains.

7. Shield volcanoes have .....

Correct Answer: B) Gently sloping sides.

8. The Hawaiian Island volcanoes were formed by a

Correct Answer: A) Hot spot.

9. Warning signs that a volcano is about to erupt include all of the following EXCEPT

Correct Answer: D) Heavy rain.

10. What kind of pyroclastic debris makes up small pebbles?

Correct Answer: A) Lapilli.

11. When the top of a volcano caves in on itself it forms a ..... ?

Correct Answer: A) Caldera.

12. When lava cools and hardens, it forms which type of rock?

Correct Answer: A) Igneous.

13. What type of volcano is built almost entirely from ejected lava fragments?

Correct Answer: A) Cinder cone.

14. About how many volcanoes erupt each year?

Correct Answer: A) 50-60.

15. Which statement about dormant volcanoes must be true?

Correct Answer: B) They have not erupted for a very long time.

16. Which of the following is a major challenge to volcano preparedness?

Correct Answer: B) Eruptions are unpredictable.

17. Which of the following helps to determine how easily magma flows?

Correct Answer: A) The amount of silica in the magma.

18. Which of the following is an active volcano in the Philippines?

Correct Answer: C) Mt. Binuluan.

19. What does a volcano do?

Correct Answer: A) Erupt.

20. A dead volcano, one that is unlikely to erupt again

Correct Answer: B) Extinct volcano.