Volcanoes Quiz 5 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Which type of lava cools while it flows forming ropy texture?

Correct Answer: B) Pahoehoe.

2. A volcano that is erupting or has shown signs that it may erupt in the future is called

Correct Answer: D) Active.

3. The opening through which molten rock and gas leave a volcano.

Correct Answer: C) Vent.

4. Weathering and erosion occur over many .....

Correct Answer: B) Years.

5. The Earth's crust is broken into pieces called

Correct Answer: C) Plates.

6. A line of volcanic activity that surrounds the Pacific Ocean basin is the

Correct Answer: A) Ring of Fire.

7. Considered the most explosive and powerful of all eruptions.

Correct Answer: D) Plinian.

8. Cinder Cone volcanoes have .....

Correct Answer: B) Pyroclastic material forming steep slopes.

9. The smooth surfaces on Earth's moon that are visible from Earth are

Correct Answer: C) Areas where lava flowed more than three billion years ago.

10. The Ring of Fire is .....

Correct Answer: D) An area full of tectonic plate boundaries.

11. Why do volcanoes swell? Because

Correct Answer: C) Magma pushes up inside it.

12. Liquid magma flows upward through cracks in rock because it is

Correct Answer: B) Less dense than the surrounding solid material.

13. This volcano is small and usually erupts over a short time

Correct Answer: B) Cinder cone.

14. What might happen if a major volcanic eruption occurred every year?

Correct Answer: C) Global temperatures might cool by several degrees.

15. Where can we locate Mt. Patoc?

Correct Answer: C) Benguet.

16. An active volcanic area on earth is found at .....

Correct Answer: D) All the above.

17. What kind of lava rock forms under water?

Correct Answer: B) Pillow lava.

18. The author wants your help in creating a heading for paragraph 6. Which heading would BEST fit paragraph 6?

Correct Answer: C) The Weather Effects of Eruptions.

19. The volcanoes on the Hawaiian Islands form due to which of the following?

Correct Answer: B) Hot Spot.

20. Volcanoes are formed because of

Correct Answer: C) Plate Tectonics.