Sci-Five | The Hindu Science Quiz: On submarine volcanoes
This view taken on January 17, 2015 from a boat at sea shows a frigate bird (C) flying on the thermals from the new vent as steam and gas rise from the eruption of a volcano, some 65 kilometres (40 miles) northwest of the South Pacific nation Tonga’s capital Nuku’alofa.
| Photo Credit: AFP
Q: Where do most volcanic eruptions occur on Earth?
About 80% of the volcanic eruptions on Earth take place underwater. They form new landmasses and provide a living environment for deep-sea creatures
Canyons
Under the ocean
Islands
Mountains
A: 2
Q: Where are submarine volcanoes most commonly found?
Like continental ones, volcanoes under the ocean are most commonly found around the boundaries of tectonic plates.
Continental shelf
Oceanic trench
Fjord
Boundaries of tectonic plates
A: 4
Q: Where are most of the active volcanoes located?
The most active volcanoes are located in the ‘Ring of Fire’ located under the Pacific Ocean. It consists of more than 450 volcanoes.
Mid-Atlantic ridge
Alpine-Himalayan orogenic belt
Ring of Fire
Andean volcanic belt
A: 3
Q: When was the most recent underwater volcano eruption?
The Hunga Tonga–Hunga Ha’apai volcano in the South Pacific Ocean erupted on January 15, 2022.
January 2022
July 2022
March 2021
January 2021
A: 1
Q: Which country is also a volcanic island?
Estimated to have formed about 16 to 18 million years ago, Iceland’s land surface was formed by the cooling of volcanic eruptions that occurred under the ocean.
Madagascar
Iceland
Greenland
Haiti
A: 2
