Fresh volcanic ash, comprising of pulverized rock, can be acidic, abrasive, gassy, gritty and odorous. While not instantly dangerous to many adults, the acidic ash and gas can cause lung damage to minor infants, older adults and to those suffering from acute respiratory illnesses. Volcanic ash can also destroy machinery, including electrical equipment and engines. Ash accumulations that are mixed with water become heavy and can damage roofs. Volcanic ash can affect people several miles away from the cone of a volcano.
The Sideways-directed volcanic explosions called “lateral blasts,” can shoot huge pieces of rock at very great speeds for many miles. These explosions can easily kill by burial, impact or heat. They are known to knock down the whole forests. Volcanic eruptions can be associated with other natural hazards, including mudflows and flash floods, earthquakes, landslides and rockfalls , fire (under special conditions), acid rain, and tsunamis. Active volcanoes in the United States are found majorly in Alaska, Hawaii, and the Pacific Northwest. The danger region around a volcano covers almost a 20-mile radius. However, some dangers may exist 100+ miles from a volcano.
Interesting Facts About Volcanoes:
1. There’s a volcano in Indonesia which spews blue flames.
2. Magma is the molten rock inside a volcano while lava is formed when the molten rock comes out of the volcano.
3. The Ring of Fire is a ring of volcanoes which surrounds the Pacific Ocean.
4. In 1986, a volcanic lake in Cameroon, Africa burped a C02 gas cloud that killed 1,746 people in minutes.
5. More than 75% of the world’s volcanoes are situated in the Ring of Fire.
6. Volcanoes can form over some mantle plumes that are regions of hot rock under the Earth surface.
7. There are volcanoes on the ocean floor which create new sea floor.
8. An erupting volcano can result in other natural disasters like tsunamis and earthquakes to occur.
9. Eruptions are what cause a volcano to enlarge.
10. There are 3 different categories of volcanoes: active, extinct, and dormant.
11. Earth has more than 1500 active volcanoes.
12. Between 10 and 20 volcanoes are considered to erupt somewhere on Earth every day.