On land, volcanoes form when one tectonic plate moves under another. Usually a thin, heavy oceanic plate subducts, or moves under, a thicker continental plate. When this happens, the ocean plate sinks into the mantle.

The Cascade Arc includes nearly 20 major volcanoes, among a total of over 4,000 separate volcanic vents including numerous stratovolcanoes, shield volcanoes, lava domes, and cinder cones, along with a few isolated examples of rarer volcanic forms such as tuyas.

convergent boundary

There are three types of volcanoes: cinder cones (also called spatter cones), composite volcanoes (also called stratovolcanoes), and shield volcanoes. Figure 11.22 illustrates the size and shape differences amongst these volcanoes. Shield volcanoes, which get their name from their broad rounded shape, are the largest.

If you fall into a volcano, it’s magma that’s your problem. Most of us probably think of lava in the sense of lava flows, but you could also fall into a lava lake, which is lava that pools in a vent, crater or a depression on certain types of volcano.

Indonesia’s Kawah Ijen volcano spews out blue lava thanks to its incredibly high levels of sulfur. It is one of the world’s most unusual volcanoes because instead of producing the usual red lava and black smoke, its underground activities result in bright blue flames rising into the air.

Lava, or magma that is on the surface of the earth, is around 1,125 degrees. If you tried to eat it, you would suffer burns before you ever got it in your mouth. You wouldn’t be able to swallow it — lava is molten rock, and as such, is extraordinarily dense and viscous.

Lava won’t kill you if it briefly touches you. You would get a nasty burn, but unless you fell in and couldn’t get out, you wouldn’t die. With prolonged contact, the amount of lava “coverage” and the length of time it was in contact with your skin would be important factors in how severe your injuries would be!

While your lungs would almost undoubtedly be irrevocably charred from the hot air above the lava (assuming relatively static air conditions over the lava), it takes about 80 seconds for the average human to fall unconscious from lack of oxygen, and I highly doubt your body will last that long.

Freshly cooled lava can have smell and taste from roasted trees and other organics that it burned up. Consider that Hawaiian lava cooled in the ocean might taste salty unless the salt was washed away with rain water. Cool lava is darn close to pottery (ceramics) with hardly any taste.

High enough heat will indeed burn bone. Anything living that has bones would certainly be destroyed by lava.

While lava can be as hot as 2200 F, some flames can be much hotter, such as 3600 F or more, while a candle flame can be as low as 1800 F. Lava is hotter than a typical wood or coal-buring fire, but some flames, such as that of an acetylene torch, is hotter than lava. Red lava is colder than candle flames.

An elderly man in Hawaii died after falling into a lava tube hidden in his backyard. They form during volcanic eruptions, starting their lives as rivers of lava and flowing downstream as they branch out into smaller channels like the roots of a tree. Then the exposed lava cools and hardens.

Most lava is very hot—about 2,000 degrees Fahrenheit. At those temperatures, a human would probably burst into flames and either get extremely serious burns or die. That lava was less than 1,000 degrees Fahrenheit, though, and the person who survived was still recovering and in pain more than five months later.

Absolutely. You would burst into flames. You’re not dense enough to sink into the lava, so you’d sit on the top like an extremely unfortunate person, burning to death. This is assuming you managed to jump into molten lava and didn’t fall on the rocks below the rim of the crater, breaking several bones in the process.

If we’re using it as an adjective (definition: covered or saturated with water or another liquid), then lava is a liquid state so it therefore it’s wet. But nothing touched by lava is left damp or moist, which means that you can’t really use wet as a verb to describe lava.

So if you fall in a pit of lava, you will float, not sink. The superheated air will likely burn your lungs within seconds, likely resulting in them filling with fluid much like a blister from a burn fills with fluid. You would likely go into shock near instantly.

A 32-year-old soldier attempting to get a better view inside of Hawaii’s Kilauea volcano fell in Wednesday night, authorities said. He was seriously injured, but survived after falling 70 feet into the volcano’s crater.

According to Wikipedia, the temperature of lava is between 700 and 1200 °C (973 to 1473 K). The melting point of Diamond at about 100,000 atm is 4200 K, which is much higher than the temperature of lava. So, it is impossible for lava to melt a diamond.

Above a certain temperature, these bonds break – and even the coldest lava on the planet would be far too hot for DNA or RNA to remain intact. So no, you almost certainly won’t find anything alive in molten rock, even extremophiles.

Any object that has a melting point higher than that will not melt when touched by lava. For example Diamond has a melting point of about 3550 C. It will not melt when touched by lava.

Steel and other rocks can be used to easily crush a diamond. Like I said earlier, super heating a diamond can set it on fire, and even throwing diamonds into your furnace will burn them all up.

A sparkle test is quick and easy to do since all you need are your eyes. Simply hold your diamond under a normal lamp and observe the bright shimmers of light bouncing off the diamond. A real diamond provides an exceptional sparkle since it reflects white light extremely well.

No, acids cannot dissolve diamonds, for the simple reason that a diamonds carbon atoms are too tightly packed together for the Hydrogen ions to be able to dissolve the substance.

A hammer – don’t ever strike a diamond with a hard object – it’ll shatter into tiny pieces. However, if you SQUEEZE a diamond, subjecting it to gently-applied pressure, it will resist. Even closing a stone without preexisting fractures in a vice will not break it.

Yes, but only in unusual circumstances. The other answers have hopefully driven home the difference between hardness and toughness. A bag of diamonds a few inches thick would stop a bullet because shattering the diamonds would use up the bullet’s kinetic energy.

Diamonds remain the most scratch-resistant material known to humanity. The structure of boron nitride in its wurtzite configuration is stronger than diamonds. Boron nitride can also be used to construct nanotubes, aerogels, and a wide variety of other fascinating applications.

If you can crush it with a pliers, it’s fake. If you can’t crush it, it’s real, or you just have a really weak grip. You can also use a hammer to try crushing an alleged diamond. But if you only want it if it’s a diamond, this method is fine.

Using a sandpaper against the ‘gem’ Diamonds are among the world’s hardest stones. Consequently, it wouldn’t be scratched by the rough surface of the sandpaper. The most common “fake” diamond is cubic zirconia. If you scratched it with a sandpaper it would scratch up just like any other material that is not a diamond.

In the absence of oxygen, diamonds can be heated to much higher temperatures. Above the temperatures listed below, diamond crystals transform into graphite. The ultimate melting point of diamond is about 4,027° Celsius (7,280° Fahrenheit).