quiz

Volcanoes

1. What is a volcano?

  • A) A rupture in the Earth's crust that allows hot lava and gases to escape
  • B) A large body of water formed by tectonic activity
  • C)  A type of rock formation found in underwater environments
  • D) A mountain formed by the accumulation of sedimentary rocks
A) A rupture in the Earth's crust that allows hot lava and gases to escape Explanation

2. The Hawaiian volcanoes are examples of which type of volcano?

  • A) Caldera
  • B) Cinder cone
  • C)  Composite volcano
  • D) Shield volcano
D) Shield volcano Explanation

3. Which gas is typically the most abundant volcanic gas?

  • A) Carbon dioxide
  • B) Sulfur dioxide
  • C) Water vapor
  • D) Hydrogen sulfide
C) Water vapor Explanation

4. Which year is known as the “year without a summer”?

  • A)  1812
  • B) 1816
  • C) 1820
  • D) 1830
B) 1816 Explanation

5. Which volcanic eruption is considered the largest recorded in human history?

  • A) Mount Tambora eruption
  • B) Mount Vesuvius eruption
  • C) Krakatoa eruption
  • D) Mount St. Helens eruption
A) Mount Tambora eruption Explanation

6. What’s the name for molten rock beneath the Earth’s surface?

  • A) Lava
  • B) Magma
  • C) Basalt
  • D) Pumice
B) Magma Explanation

7. What is tephra?

  • A) Underground reservoirs of magma
  • B) Volcanic gases emitted during an eruption
  • C) The fragments of volcanic material ejected during an eruption
  • D) The name for volcanic ash
C) The fragments of volcanic material ejected during an eruption Explanation

8. Which moon of Jupiter is considered the most volcanically active body in the Solar System?

  • A) Ganymede
  • B) Europa
  • C) Callisto
  • D) Io
D) Io Explanation

9. Which volcano is considered the tallest in the world?

  • A) Mount Kilimanjaro
  • B) Mount Everest
  • C) Mauna Kea
  • D) Mount Fuji
C) Mauna Kea Explanation

10. Which of the following is an example of a supervolcano?

  • A) Mount St. Helens
  • B) Mount Fuji
  • C) Yellowstone Caldera
  • D) Mount Etna
C) Yellowstone Caldera Explanation

11. At what temperature does rock typically melt to form magma?

  • A) 300°C to 500°C
  • B) 500°C to 700°C
  • C) 700°C to 1,300°C
  • D) 1,300°C to 2,000°C
C) 700°C to 1,300°C Explanation

12. The Deccan Traps in India is an example of

  • A) Shield volcano
  • B) Cinder cone
  • C) Composite volcano
  • D) Flood basalt province
D) Flood basalt province Explanation

13. What is the term used for molten rock that flows out of a volcano onto the Earth’s surface?

  • A) Lava
  • B) Magma
  • C) Obsidian
  • D) Tephra
A) Lava Explanation

14. Which volcano is considered the most active volcano in the world?

  • A) Mauna Loa
  • B) Kilauea
  • C) Mount St. Helens
  • D) Mount Vesuvius
B) Kilauea Explanation

15. Which of the following is the main component of magma?

  • A) Water vapor
  • B) Silica (SiO₂)
  • C) Iron (Fe)
  • D) Sodium (Na)
B) Silica (SiO₂) Explanation

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