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Forest Fires
Forest fires have caused devastation and regeneration all around the world for thousands of years. Forest fires may be devastating when out of control, but they are also necessary from time to time in order to keep forests healthy and regenerate new life. This category explores the effects forest fires have on our world.
574 Questions
Which of the following describes a process of succession after a forest fire?
It depends on where the fire occurs, and what kind of habitat is present. In general, most often, grasses and forbs will become reestablished first, followed within a couple years by the return of sapling trees and woody plants. Over many decades, fast-growing trees will become reestablished first, then eventually give way to old-growth forest types of trees.
Fire whirls are a rare but potentially catastrophic form of fire. These buoyant fire plumes are columns of ascending air with rotational motion which carry aloft smoke, debris, and flames greatly increasing the rate of fire spread .Fire whirls range from a foot or two in diameter to small tornadoes in size and intensity
Once a fire whirl leaves the influence of the main fire it quickly loses intensity and becomes an ordinary whirlwind
In order for a fire whirl to exist, there must be an organized source of angular momentum, either from wind shear or from the fire's convection column, which in turn creates large swirl velocities as air is entrained into the fire plume
Fire whirls occur most frequently where heavy concentrations of fuels are burning and a large amount of heat is being generated in a small area.
Mechanical forces are often present which serve as triggering mechanisms to start the whirl
.A common area for fire whirls is the lee side of a ridge where the heated air from the fire is sheltered from general winds. Mechanical eddies produced as the wind blows across the ridge can serve as the triggering mechanism to initiate the fire whirl. On flat terrain they tend to occur on the lee side of the fire near the outside edges of the front.
Even in small fires that aren't exhibiting extreme fire behavior, fire whirls can be created by lighting patterns. A rotational motion can be generated when two lines of fire come together, particularly if they approach at right angles. If large fire whirls are created, fire control problems can result.
Can forest fires be caused by man?
About 80% are caused by human activity, but sometimes not intentionally. For example, if a hydro pole falls and starts a fire, that is caused by human activity, because we built the hydro pole. If a campfire isn't put out properly, that is also considered human made, because we caused the fire by not putting out the campfire.
What happens at a fire investigation?
At a fire investigation there will be tried to find out where the fire has started and there will be investigated what caused the fire. Experts can tell by the traces how the fire spread and how it started.
On Apollo 13 what was the cause of the fire?
A short circuit occurred in the electrical system when the oxygen tanks were stirred. This caused oxidation and pressure loss to occur in one tank, and then the other which critically disabled the craft and aborted the mission.
The cause of the shorting was later thought to be from a combination of switch design and pre-launch detanking procedures where a switch welded shut, although this was unknown at the time. Normally this switch would open when the temperature rose and turn the heater off. Prior to this, there was a redesign of the voltage system and all components of the tanks were upgraded to the new voltage except the heater thermostat switches. This incompatibility allowed the temperature to rise during testing and to damage the Teflon-coated wiring.
Later, during the mission when the tank was stirred, the exposed wires shorted and the Teflon caught fire. In the pure oxygen environment, the fire was intense, and the resultant heat caused the tank to rupture and also damage the adjacent tank. One cover on the service module was blown off, which later caused Lovell to exclaim when he saw it as it was jettisoned " There's one whole side of that spacecraft missing!" Because the service module burnt up in the earth's atmosphere, as was normal procedure, the findings were made from an investigation into pre-launch procedures and reconstructions of the likely cause of events. The above conditions were simulated in a hangar, and another explosion occurred.
What is a dessert set on fire called?
Well, typically there are no trees in a desert, so you just call it a fire. no special name.
What was the effect of the fire of London on the people who lived there?
the plague had a massive effect on the people who lived there, this is because they had to leave their homes again after the plague. some peoples homes had to be blown up to help stop the fire. but there were some advantages like the fac t that the plague was wiped out and that the whole of London could be rebuilt in a more efficient way.
Which adaptation helps pine trees survive forest fires?
Pine trees have thick, protective bark that insulates their inner tissues from heat during forest fires. Additionally, many species, such as the lodgepole pine, have cones that are serotinous, meaning they remain closed until exposed to the intense heat of a fire, which triggers seed release. This adaptation not only allows them to survive the fire but also promotes regeneration in the post-fire environment.
What are the importance of the forest?
The Importance of the forest is that the trees give us air, and well, we need air to live. So, we can't live without the rainforest's air.
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Which of these is most likely to occur when biodiversity is lost in an ecosystem?
Answer this question… A loss of potential sources of future medicines
Why should we educate ourselves?
Education is essential for personal growth and development, enabling individuals to acquire knowledge and skills that can improve their opportunities for success. It also promotes critical thinking, problem-solving, and creativity, which are crucial in navigating an ever-changing world. Ultimately, education empowers individuals to make informed decisions, contribute to society, and lead fulfilling lives.
What are the main causes for domestic fire break outs?
The main causes of domestic fire breakouts include cooking accidents, which are the leading cause, often resulting from unattended stovetops or flammable materials near heat sources. Other significant causes are electrical faults, such as overloaded circuits or faulty wiring, and heating equipment, including space heaters placed too close to combustibles. Additionally, careless use of candles and smoking materials can ignite fires, while improper storage of flammable liquids also poses a risk.
