Volcanoes Practice Questions
20 free Volcanoes practice questions for the Static GK. Tap an option to answer — you get instant feedback, the correct answer, and a detailed explanation for every question.
Which of the following is the world's most active volcano, located on the island of Hawaii?
- A Mauna Loa
- B Kilauea
- C Etna
- D Yasur
Correct answer: Kilauea
Kilauea is considered one of the most active volcanoes on Earth and has been erupting almost continuously since 1983. It is a shield volcano located on the southeastern shore of the Big Island of Hawaii.
The 'Pacific Ring of Fire' is home to approximately what percentage of the world's active volcanoes?
- A 25%
- B 50%
- C 75%
- D 90%
Correct answer: 75%
The Ring of Fire is a horseshoe-shaped belt around the Pacific Basin where intense tectonic activity occurs. It is home to about 75% of the world's active and dormant volcanoes (the commonly cited 90% figure instead refers to the share of the world's earthquakes that occur there).
Which volcano is famously known as the 'Lighthouse of the Mediterranean'?
- A Vesuvius
- B Pinatubo
- C Mount Fuji
- D Stromboli
Correct answer: Stromboli
Stromboli, located off the north coast of Sicily, has been in almost continuous eruption for the past 2,000 years. Its nightly glow is visible from long distances at sea, earning it its famous nickname.
Which type of volcano is characterized by a broad, gently sloping cone formed by highly fluid basaltic lava?
- A Cinder Cone Volcano
- B Stratovolcano
- C Shield Volcano
- D Lava Dome
Correct answer: Shield Volcano
Shield volcanoes are built almost entirely of fluid lava flows. They are named for their large size and low profile, resembling a warrior's shield lying on the ground.
Mount Vesuvius, which destroyed the Roman city of Pompeii in 79 AD, is located in which country?
- A Greece
- B Turkey
- C Spain
- D Italy
Correct answer: Italy
Mount Vesuvius is located on the Gulf of Naples in Campania, Italy. It is the only volcano on the European mainland to have erupted within the last hundred years.
Which is the highest active volcano in the world, situated on the border between Chile and Argentina?
- A Mount Kilimanjaro
- B Cotopaxi
- C Mount Rainier
- D Ojos del Salado
Correct answer: Ojos del Salado
Ojos del Salado stands at 6,893 meters in the Andes Mountains. It is a massive stratovolcano and holds the record for being the highest active volcano on Earth.
The catastrophic eruption of which volcano in 1883 generated the loudest sound ever recorded in history?
- A St. Helens
- B Tambora
- C Novarupta
- D Krakatoa
Correct answer: Krakatoa
The eruption of Krakatoa in Indonesia was so violent that the sound was heard nearly 4,800 km away. The event caused massive tsunamis and led to a global drop in temperature.
What is the term for a large, cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcanic eruption?
- A Crater
- B Vent
- C Fumarole
- D Caldera
Correct answer: Caldera
A caldera is formed when the roof of a magma chamber collapses because the structural support has been removed by an eruption. These features can be several kilometers in diameter.
Which country has the highest number of historically active volcanoes?
- A Japan
- B Philippines
- C Indonesia
- D Iceland
Correct answer: Indonesia
Indonesia sits on the convergence of several tectonic plates, making it the most volcanically active nation. It contains approximately 130 active volcanoes.
Mount Kilimanjaro, a dormant volcano and the highest peak in Africa, is located in which country?
- A Kenya
- B Ethiopia
- C Uganda
- D Tanzania
Correct answer: Tanzania
Kilimanjaro is a large stratovolcano composed of three distinct cones: Kibo, Mawenzi, and Shira. Kibo is the highest peak and is considered dormant, meaning it could erupt again.
What is the molten rock found beneath the Earth's surface called?
- A Lava
- B Pumice
- C Magma
- D Tephra
Correct answer: Magma
Magma is the extremely hot semi-liquid and liquid rock located under Earth's crust. Once it breaks through the surface and reaches the exterior, it is referred to as lava.
The 'Decade Volcanoes' are 16 volcanoes identified by the IAVCEI as being worthy of particular study because of:
- A Their risk to nearby populations
- B Their unusually great height
- C The beauty of their eruptions
- D Their frequent minor earthquakes
Correct answer: Their risk to nearby populations
The Decade Volcanoes program encourages studies and public-awareness activities for volcanoes that have a history of large, destructive eruptions and are located near large population centers.
Which of the following is a prominent active volcano in Japan, often depicted in art and photography?
- A Mount Fuji
- B Mount Merapi
- C Mount Apo
- D Mount Ruapehu
Correct answer: Mount Fuji
Mount Fuji is an active stratovolcano that last erupted in 1707. It is one of Japan's 'Three Holy Mountains' and was added to the World Heritage List as a Cultural Site in 2013.
Which volcano caused the 'Year Without a Summer' in 1816 due to its massive eruption the previous year?
- A Mount Tambora
- B Mount Pinatubo
- C Mount Pelée
- D El Chichón
Correct answer: Mount Tambora
The 1815 eruption of Mount Tambora in Indonesia was the largest in recorded history. It ejected so much volcanic ash into the atmosphere that it blocked sunlight and caused global climate anomalies.
Mount Etna, one of the world's most active volcanoes, is located on which island?
- A Sicily
- B Sardinia
- C Crete
- D Cyprus
Correct answer: Sicily
Mount Etna is located on the east coast of Sicily, Italy. It is the highest active volcano in Europe outside the Caucasus and is in a near-constant state of activity.
A 'Pyroclastic flow' is best described as:
- A A fast-moving current of hot gas and ash
- B A slow-moving river of molten lava
- C The smoke rising from a volcanic vent
- D A mudslide caused by melting ice on a volcano
Correct answer: A fast-moving current of hot gas and ash
Pyroclastic flows are extremely dangerous and can travel at speeds of up to 700 km/h. They consist of a high-density mix of hot lava blocks, pumice, ash, and volcanic gas.
Which volcano in the United States erupted violently in 1980, significantly altering the surrounding landscape?
- A Mount St. Helens
- B Mount Shasta
- C Newberry Volcano
- D Lassen Peak
Correct answer: Mount St. Helens
The May 18, 1980 eruption of Mount St. Helens in Washington State was the most economically destructive volcanic event in U.S. history. It caused a massive lateral blast and debris avalanche.
In which country is Mount Mayon, famous for its nearly perfect conical shape, located?
- A Malaysia
- B Philippines
- C New Zealand
- D Thailand
Correct answer: Philippines
Mount Mayon is an active stratovolcano on the island of Luzon in the Philippines. It is renowned for its symmetric cone shape, despite being the most active volcano in the country.
What is the name of the scale used to measure the explosiveness of volcanic eruptions?
- A Richter Magnitude Scale
- B Volcanic Explosivity Index (VEI)
- C Modified Mercalli Intensity Scale
- D Beaufort Wind Force Scale
Correct answer: Volcanic Explosivity Index (VEI)
The VEI is a relative measure of the explosiveness of volcanic eruptions, ranging from 0 to 8. It considers factors like the volume of products, eruption cloud height, and qualitative observations.
Which island nation is essentially a volcanic plateau, sitting on the Mid-Atlantic Ridge?
- A Ireland
- B Iceland
- C Madagascar
- D Sri Lanka
Correct answer: Iceland
Iceland is one of the most active volcanic regions in the world due to its location on a divergent plate boundary. It has high concentrations of volcanoes and geothermal activity.