A volcano can be defined as an opening in the earth’s surface. These openings let ash, gas, and magma out. Volcanoes are generally located where tectonic plates meet. There is an area around the Pacific Ocean called Ring of Fire. Around 75% of all the volcanoes in the word are located in this area. An eruption occurs when pressure builds up. The word Volcano has been derived from the Italian word ‘vulcano’ that means burning mountain. There are four major types of volcanoes which are: – composite volcano, shield volcano, cinder cone volcano, and lava domes.
Fun Facts: –
- The exact number of volcanoes is not known but according to an estimate, there have been more than 1,300-1,500 volcanoes.
- Most of the volcanoes are located along the edges of continents where tectonic plates diverge or converge.
- Hawaii’s Mauna Kea is the tallest volcano in the entire world. It is a shield volcano.
- Another volcano of Hawaii, Kilauea is the most active volcano in the world.
- The biggest known volcano in the entire universe is Olympus Mon which is on planet Mars.
- The area within a 20-mile radius of a volcano is considered as the danger area.
- There are approximately 500 active volcanoes all over the world.
- There are total three different states of a volcano: – dormant, extinct, and active.
- Mount Etna of Italy has the most documented eruptions.
- Magma is the hot liquid rock under the earth’s surface. When it comes out of a volcano, it is called lava.
- This lava can reach up to 1,250°C and can burn almost everything.
- Volcanoes can also occur over mantle plumes. A mantle plume is the super hot area of rock inside the earth.
- One in every 20 people lives in the danger area of an active volcano.