Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected] can’t we throw all our trash into a volcano and burn it up? – Georgine T.It’s true that lava is hot enough to burn up some of our trash. When Kilauea erupted on the Big island of Hawaii in 2018, the lava flows were hotter than 2,000 degrees Fahrenheit (1,100 Celsius). That’s hotter than the surface of the planet Venus, and hot enough to melt many rocks. It’s also as hot as waste incinerators, which usually burn garbage at 1,800 to 2,200 F (1,000-1,200 C).[Over 140,000 readers rely on The Conversation’s newsletters to understand the world. Sign up today.]But not all lavas are the same temperature. The eruptions in Hawaii produce a type of lava called basalt. Basalt is much hotter and more fluid than the lavas that erupt at other volcanoes, like the thicker dacite lava that erupts at Mount St. Helens in Washington state. For example, the 2004-2008 eruption at Mount St. Helens produced a lava dome with surface temperatures less than about 1,300 F (704 C).There are 161 volcanoes in 14 U.S. states and territories. Scientists monitor them and warn nearby communities if they see signs that a volcano may erupt. USGSBeyond temperature, there are other good reasons not to burn our trash in volcanoes. First, although lava at 2,000 degrees F can melt many materials in our trash – including food scraps, paper, plastics, glass and some metals – it’s not hot enough to melt many other common materials, including steel, nickel and iron.Second, there aren’t many volcanoes on Earth that have lava lakes, or bowl-like craters full of lava, that we could dump trash into. Of all of the thousands of volcanoes on Earth, scientists know of only eight with active lava lakes. They include Kilauea, Mount Erebus in Antarctica and Nyiragongo in the Democratic Republic of the Congo. Most active volcanoes have craters filled with rocks and cooled lava, like Mount St. Helens, or with water, like Crater Lake in Oregon.The third problem is that dumping trash into those eight active lava lakes would be a very dangerous job. Lava lakes are covered with a crust of cooling lava, but just below that crust they are molten and intensely hot. If rocks or other materials fall onto the surface of a lava lake, they will break the crust, disrupt the underlying lava and cause an explosion.This happened at Kilauea in 2015: Blocks of rock from the crater rim fell into the lava lake and caused a big explosion that ejected rocks and lava up and out of the crater. Anyone who threw garbage into a lava lake would have to run away and dodge flaming garbage and lava.[embedded content]Suppose it was possible to dump trash safely into a lava lake: What would happen to the trash? When plastics, garbage and metals burn, they release a lot of toxic gases. Volcanoes already give off tons of toxic gases, including sulfur, chlorine and carbon dioxide.Sulfur gases can create acidic fog, which we call “vog,” for “volcan …
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[email protected] can’t we throw all our trash into a volcano and burn it up? – Georgine T.It’s true that lava is hot enough to burn up some of our trash. When Kilauea erupted on the Big island of Hawaii in 2018, the lava flows were hotter than 2,000 degrees Fahrenheit (1,100 Celsius). That’s hotter than the surface of the planet Venus, and hot enough to melt many rocks. It’s also as hot as waste incinerators, which usually burn garbage at 1,800 to 2,200 F (1,000-1,200 C).[Over 140,000 readers rely on The Conversation’s newsletters to understand the world. Sign up today.]But not all lavas are the same temperature. The eruptions in Hawaii produce a type of lava called basalt. Basalt is much hotter and more fluid than the lavas that erupt at other volcanoes, like the thicker dacite lava that erupts at Mount St. Helens in Washington state. For example, the 2004-2008 eruption at Mount St. Helens produced a lava dome with surface temperatures less than about 1,300 F (704 C).There are 161 volcanoes in 14 U.S. states and territories. Scientists monitor them and warn nearby communities if they see signs that a volcano may erupt. USGSBeyond temperature, there are other good reasons not to burn our trash in volcanoes. First, although lava at 2,000 degrees F can melt many materials in our trash – including food scraps, paper, plastics, glass and some metals – it’s not hot enough to melt many other common materials, including steel, nickel and iron.Second, there aren’t many volcanoes on Earth that have lava lakes, or bowl-like craters full of lava, that we could dump trash into. Of all of the thousands of volcanoes on Earth, scientists know of only eight with active lava lakes. They include Kilauea, Mount Erebus in Antarctica and Nyiragongo in the Democratic Republic of the Congo. Most active volcanoes have craters filled with rocks and cooled lava, like Mount St. Helens, or with water, like Crater Lake in Oregon.The third problem is that dumping trash into those eight active lava lakes would be a very dangerous job. Lava lakes are covered with a crust of cooling lava, but just below that crust they are molten and intensely hot. If rocks or other materials fall onto the surface of a lava lake, they will break the crust, disrupt the underlying lava and cause an explosion.This happened at Kilauea in 2015: Blocks of rock from the crater rim fell into the lava lake and caused a big explosion that ejected rocks and lava up and out of the crater. Anyone who threw garbage into a lava lake would have to run away and dodge flaming garbage and lava.[embedded content]Suppose it was possible to dump trash safely into a lava lake: What would happen to the trash? When plastics, garbage and metals burn, they release a lot of toxic gases. Volcanoes already give off tons of toxic gases, including sulfur, chlorine and carbon dioxide.Sulfur gases can create acidic fog, which we call “vog,” for “volcan …nnDiscussion:nn” ai_name=”RocketNews AI: ” start_sentence=”Can I tell you more about this article?” text_input_placeholder=”Type ‘Yes'”]
