Which of the following statements is/are incorrect about volcanoes?1. ...
Those that have been known to errupt and show signs of possible erruption in future are dormant volcanoes. Other statements are correct.
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Which of the following statements is/are incorrect about volcanoes?1. ...
Incorrect Statements about Volcanoes
Statement 1: Dormant volcanoes have not erupted at all in historic times.
This statement is incorrect.
Dormant volcanoes are those that are currently inactive but have the potential to erupt in the future. They might not have erupted in recent times, but they have shown volcanic activity in the past. In historic times, there have been instances where dormant volcanoes have erupted after a long period of dormancy. For example, Mount St. Helens in the United States erupted in 1980 after being dormant for over a century. Therefore, dormant volcanoes can indeed erupt in historic times.
Statement 2: The Himalayas have no active volcano.
This statement is correct.
The Himalayas, which is a mountain range spanning several countries including India, Nepal, Bhutan, and China, do not have any active volcano. The formation of the Himalayas is primarily due to the collision between the Indian and Eurasian tectonic plates. This collision resulted in the upliftment of the Earth's crust, forming the majestic Himalayan mountain range. However, the Himalayas are not associated with volcanic activity. The region is characterized by the presence of high peaks and deep valleys, but there are no active volcanoes in this area.
Statement 3: The greatest concentration of volcanoes is found in the Circum-pacific region.
This statement is correct.
The Circum-Pacific region, also known as the Ring of Fire, is indeed the area with the highest concentration of volcanoes on Earth. It is a region that encircles the Pacific Ocean, stretching from the western coast of South America to the eastern coast of Asia, including countries like Chile, Japan, Philippines, Indonesia, and the United States. The Ring of Fire is characterized by intense tectonic activity, with numerous tectonic plates converging and interacting. This results in the formation of many volcanoes, volcanic arcs, and volcanic island chains. This region is highly prone to volcanic eruptions and earthquakes due to the tectonic plate boundaries and subduction zones present in the area.
Conclusion
In conclusion, the incorrect statements about volcanoes are:
1. Dormant volcanoes have not erupted at all in historic times.
2. The Himalayas have no active volcano.
The correct statement is:
3. The greatest concentration of volcanoes is found in the Circum-pacific region.
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