Pyroclastic flow speeds are so intense, they seem to defy the laws of physics, given the high static friction of volcanic particles. Now volcanic researchers have figured out how it works – those hot currents generate a layer of air at their base, over which they glide almost without friction.

A pyroclastic flow is a dense, fast-moving flow of solidified lava pieces, volcanic ash, and hot gases. A common cause is when the column of lava, ash, and gases expelled from a volcano during an eruption loses its upward momentum and falls back to the ground.

80 km per hour

The difference between a pyroclastic flow and a pyroclastic surge is one of degree:- ❑ Flows are more dense than surges, consequently they tend to follow topography along predictable paths. Surges are less dense, they move more quickly and can surmount topography such as hills and ridges.

A pyroclastic flow can easily wipe those out. This is how a prisoner survived a pyroclastic flow in 1902. While an entire city was being burned, Ludger Sylbaris sat in an underground jail cell with bomb-proof walls. Days later, he was found underground with severe burns all over his body, but he managed to survive.

If the drop is just like a water droplet, it will give you severe injury, as the temperature of lava is quite high, but not possiblly kill you. But as lava has very high density, a drop it will form will be normally very big and it has a possibility of kill you if you come in contact.

A pyroclastic flow is a hot (typically >800 °C, or >1,500 °F ), chaotic mixture of rock fragments, gas, and ash that travels rapidly (tens of meters per second) away from a volcanic vent or collapsing flow front. Pyroclastic flows can be extremely destructive and deadly because of their high temperature and mobility.

As long as the lava doesn’t find its way into a tube- or chute-shaped valley, it will probably move slower than a mile per hour. Even if you could stay ahead of the lava, you’d never survive the pyroclastic flow, an unimaginably hot, fast-moving cloud of ash, rock, gas and debris that wipes out everything in its path.

If the supervolcano underneath Yellowstone National Park ever had another massive eruption, it could spew ash for thousands of miles across the United States, damaging buildings, smothering crops, and shutting down power plants. In fact, it’s even possible that Yellowstone might never have an eruption that large again.

The year 2020 will undoubtedly go down in history as the worst year ever — at least to those of us living in it. It started with Australia on fire. By March, 46 million acres, an area roughly the size of Syria, had burned, destroying the habitats of more than 800 vertebrate species alone.

Then the historians made their picks. The worst year in world history wasn’t even a close contest. It was 1348, the height of the Black Death, during which as many as 200 million people died. That would be like wiping out about 65 percent of the U.S. population.

10 Worst Deaths in History

• Hiroshi Ouchi. In 1999, Japanese nuclear worker Hiroshi Ouchi got a deadly radiation dose when material he worked with got critical.
• Junko Furuta.
• Grigori Rasputin.
• David Allen Kirwan.
• People who were sentenced to the boats.
• Perillos.
• Balthasar Gerards.
• György Dózsa.

The Radio Times Guide to Films described Plan 9 as “the worst film ever made” and “tediously depressing”.

Here are the 44 movies on Rotten Tomatoes with a 0% score and why critics couldn’t stand them.

• “Staying Alive” (1983)
• “Bolero” (1984)
• “Jaws: The Revenge” (1987)
• “Police Academy 4: Citizens on Patrol” (1987)
• “Mac and Me” (1988)
• “Return of the Living Dead Part II” (1988)
• “Problem Child” (1990)

Logistics

The Most Inappropriate PG Movies Of All Time

• Sixteen Candles (1984) Sixteen Candles is a classic, but it really doesn’t belong in the PG category.
• Jaws (1975)
• Poltergeist (1982)
• Who Framed Roger Rabbit (1988)
• Ghostbusters (1984)
• The NeverEnding Story (1984)
• Grease (1978)
• Arthur (1981)

Movies so depressing, you wouldn’t want to see a second time but can’t help watching them at least once.

1. Requiem For A Dream (2000)
2. The Elephant Man (1980)
3. Irreversible (2002)
4. Dancer In The Dark (2000)
5. Passion Of The Christ (2004)
6. Lilya 4-ever (2002)
7. The Seventh Continent (1989)
8. 12 Years A Slave (2013)

Violent PG-13 movies: Which ones are the bloodiest?

• “Sucker Punch” (2011) Rated PG-13 for thematic material involving sexuality, violence and combat sequences, and for language.
• “Man of Steel” (2013)
• “Terminator Salvation” (2009)
• “The Dark Knight” (2008)
• “The Lone Ranger” (2013)

The restrictions set by the Us ratings board mean the F-word can only be used once in a PG-13 movie.