English composition words about volcanoes should be about 80 words simple.

For people living near the volcano, a large-scale eruption is extremely dangerous. The hot lava flow can reach 2000 degrees Fahrenheit (1, 250 degrees Celsius) or higher, and it can be released and burn everything in its path, including the whole town. Hardened lava boulders will rain down on the village. Mudslides produced by rapidly melting snow will expose mountains and valleys and bury towns. Volcanic ash and poisonous gas can cause lung injury and other problems, especially for infants and the elderly. Scientists estimate that in the past 300 years, more than 260,000 people have died from volcanic eruptions and their consequences.

Volcanoes often exist at the edge between tectonic plates, forming a huge rock plate on the earth's surface. About 90% of volcanoes are located in the ring of fire on the edge of the Pacific Ocean.