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because debris avalanches occur in steep valleys, and are made up of more solid matter than debris flows. debris avalanches are the direct cause of debris flows, which are fluid flows of water, rock and sediment.
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What is the comparative and superlative of Dangerous?
Since the word "dangerous" is considered a long adjective (of 3 or more syllables), the words "more" and "most" are used to form the comparative and superlative forms. The comparative form is more dangerous. The superlative form is most dangerous.
Which of these hazards are characteristic of a convergent boundary Earthquakes volcanoesMountianstrenches mud landslides other?
Volcanic activity and Earthquakes are two. And two more are Landslides and avalanches.
What type of flow does mt st helens have?
Mount St. Helens has produced lava flows in the past. However, the famous eruption in 1980 produced something much more dangerous: pyroclastic flows. These are avalanche-like currents of hot ash, rock, and gas that race out of a volcano. The initial pyroclastic flow from the lateral blast may have briefly been supersonic.
What happens when a stream of water flows over?
It could become a waterfall. Or if it just flows over onto more land then it becomes a river, not a stream.
Was Artemis dangourous?
All of the Greek gods are dangerous because they are the much more powerful form of man.
Which is deadlier avalanches or earthquakes?
Earthquakes are more dangerous.Earthquakes are more dangerous.Earthquakes are more dangerous.Earthquakes are more dangerous.Earthquakes are more dangerous.Earthquakes are more dangerous.Earthquakes are more dangerous.Earthquakes are more dangerous.Earthquakes are more dangerous.Earthquakes are more dangerous.Earthquakes are more dangerous.
Volcanoes can have runny or sticky molten rock which one is fairly safer?
Sticky magma is more dangerous. The more viscous magma tend not to come out as lava flows, but often come out explosively, producing fast-moving avalanches of hot ash and gas called pyroclastic flows.
Besides lava what are the other two dangerous things that come out of volcanoes?
Two other dangers from volcanoes, which are in fact more dangerous than lava flows, are pyroclastic flows and lahars. Pyroclastic flows are hot masses of ash, rock, and gas that move down a volcano's sides like avalanches, often exceeding 100 miles per hour. Unlike slow-moving lava flows, they leave almost no opportunity to escape. Lahars are mudflows that form when volcanic ash mixes with water. Lahars move through river valleys like flash floods, but with the density of concrete. A large lahar can bury a town in minutes.
Is a composite volcano the most dangerous volcano?
The primary threat from a shield volcano is flowing lava. These flows generally move fairly slowly. While they can be destructive, people can usually evacuate in time without much difficulty. Composite volcanoes produce a variety of hazards, the most dangerous of which are pyroclastic flows. These superheated avalanches of ash, rock, and gas can moved at well over 100 mph, scorching everything in their path and giving no time to escape. There are also mudflows called lahars that can bury villages and falling ash that can collapse roofs and clog the lungs
Why are the himalayas mountains so dangerous?
Mount Everest is a dangerous mountain to climb, like any high mountain. The main dangers on Mount Everest are: The Altitude Crevasses Avalanches Rock Fall The Weather Take a look at the article at the link for more details
How do scientists predict a flow of lava?
Scientists can often find clues about past eruptions by studying the deposits left behind. Areas affected by lava flows, debris flows, tephra, or pyroclastic flows can be mapped, making disaster planning more effective. In addition to this type of long-range forecasting, scientists are becoming more and more skilled at spotting the warning signs of an eruption.
Was the Soufriere Hills an AA or a pahoehoe eruption?
Neither. Pahoehoe and a'a are both basaltic lavas (mafic composition). Soufreier Hills erupts andesitic material (intermediate composition). This material took the form of ash and pumice forming pyroclastic flows (which are more like avalanches) rather than lava flows.
What happens to all the space debris and is there a danger from it?
A lot of the debris close to earth will end up coming back to the planet eventually, most of it will burn up in the atmosphere. It's not really dangerous to us on earth, but will present some danger to things in space, particularly close to the earth as more space debris accumulates.
Does global warming cause avalanches?
Global warming is unlikely to cause avalanches directly. They are usually caused by runoff from heavy rain and intense storms. Global warming is expected to cause more intense storms and could therefore be an indirect cause of avalanches.
Why are more areas prone to have avalanches?
The Rocky Mountains are very steep, and avalanches are common as a result.
How is the damage of a volcano different from that of a tornado?
Tornadoes cause damage with extreme winds and debris carried by those winds. Damage from less intense tornadoes includes damage roofs and siding, downed trees and tree limbs, and broken windows. More intense tornadoes will rip away roofs and walls, carrying debris away. Some structures may be overturned, blown over, or blown away. Volcanoes cause damage in a variety of ways. Hot ash and lava flows can start fires. Crusted-over lava flows can essentially bulldoze some areas. Places can by buried under cooled lava, ash, or mud. Mudflows, which are as dense as concrete, can sweep away sturdy buildings. Pyroclastic flows, avalanches of superheated ash, rock, and gas, burn most of what they hit and can strike with force that, in some cases, surpasses even the most violent tornadoes.
How and why do avalanches occur?
Avalanches occurs when huge snow masses become loose and flow downhill. This is caused by many factors including temperature, vibration, sloppy angle and so much more.
