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Practice Reading & Listening on Wildfire
Practice Reading & Listening on Wildfire for IELTS & TOEFL with authentic materials, podcast from National Geographic YouTube channel and illustrated flashcards transcribed by Zahra Pourbagher
On average, wildfires burn up to five million acres of land in the United States each year. While they can start naturally, wildfires are often caused by humans with devastating consequences.
Types of wildfires
Wildfires are large, uncontrolled infernos that burn and quickly spread through wild landscapes. Types of wildfires may include forest, brush and peatland fires, depending on the landscapes affected.
Fire triangle
Wildfires require three components known as the fire triangle. A heat source, fuel and oxygen. Heat source, such as the sun, a hot bolt of lightening or a smoldering match can supply enough heat to spark a fire. That spark then turns into flames when fuel or any flammable material is present. Dry, dead grasses, leaves and trees are common fuels for wildfires, but so are living vegetation called green fuels. Pine trees and other evergreens contain flammable oils that can burn when exposed to a heat source.
Spread of wildfires
As the fuel burns, the resulting flames feed and thrive off of oxygen. When air movement or wind occurs, not only is more oxygen supplied to the fire, but it may also help transport and spread the flames. Since wildfires occur outdoors, they have a nearly endless supply of oxygen from our atmosphere to burn. Many wildfires are the result of natural causes. A warmer climate and weather patterns like El Nino can create the hot, dry conditions necessary for fires to erupt. However, about 90% of wildfires are caused by human activity, such as campfires that become uncontrollable, improperly handled cigarettes or arson.
Although wildfires occur worldwide, they are most common in the western United States. There, high temperatures, drought, and frequent lightning and thunderstorms can create the perfect setting for wildfires.
Effects of wildfires
While they can be destructive, and sometimes even deadly for humans, wildfires do play an important role in nature. They can help a forest by removing harmful insects or diseased plants, and they can clear thick canopies to help sunshine reach seedlings on a forest floor. By being aware of the conditions necessary for wildfires to occur, they can be managed and prevented, thereby saving lives and making way for the positive effects of wildfires.
It is both informative and containing good words. I did not know words like “inferno, pleatland and El Nino.And as Armaghan mentioned, I did not know that wildfire may be beneficial sometimes.
That’s right. Learning vocabulary in real context with images is a standard approach to mastering vocabulary for longer retention and meaningful learning.
D.r what does beneficial means.?
Hi Soroosh,
Beneficial means useful and advantages. For example, playing sports is beneficial because it’s good for your body and mind.
It’s interesting. I didn’t know that wildfires could be beneficial for the nature and forests.
That’s right. Even volcanic deposits are enriched in nutrients, such as magnesium and potassium that act as fertilizers for the growth of new plants.
I undrestand . I try to correct these mistakes for next transcription
Thank you so much.
I undrestand . I try to crrect these msitake for next transcription.
That’s OK. Thank you for your understanding.
Wildfire
:
On average wildfire burn up to five million across of land in the United Stste each year .
While they can start naturally wildfires are often caused by humans with devastating consequences
wildfires are large uncontrolled inferno’s that burn and quickly spread through wild lands scapes
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types of wildfires may include forest
, brush , and peatland fires, depending on the land scapes affected
Wildfire require three components known as the fire triangle .
A heat source , fuel and oxigen .
heat Source such as the Sun a hot bolt of lightening or smolderning match can supply enough heat to spark a fire .
That spark then turns in to flames when fuel or any flamable material is present .
Dry , dead grasses , leaves and trees are common fuels for whildfires but so are living vegetation called green fuels .
Pine trees ever green contain flamable oils that can burn when expose to a heat sorce .
As the fuel burns the resulting flames feed and thrive off of oxygen
When air movement or wind occurs ، not only is more oxygen supplied to the fire but it may also help transport and spread the flames .
since wild fire occure outdoors , they have a nearly endless supply of oxygen from our atmospher to burn .
Many wildfires are the result of natural causes .
A warmer climate and weather patterns like , EL Nina can creats the hot , dry conditions necessary for fires to erupt
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However , about 90 percent wildfires are caused by human activity , such as comfires that become uncontrollable improperty handled cigarette or arson .
Although wild fires occure world wild , they are most common in the western United ststes .
There , high tempretures , drought frequent lightning and thunderstorms can creat the perfect setting for wild fires.
While they can be destructive , and sometimes even deadly for humans , wildfires do play an important role in nature
they can help a forest by removing harmful insects or diseased plants and they can clear thick compies to help sun shine reach seedlings on a forest floor
by being aware of the conditions necessary for wildfires to occur , they can be managed and prevented thereby saving lives and making way for the positive effects of wildfires .
Thank you very much for your transcription.
Actually, there were several mistakes and errors in your transcription alongside misspellings and punctuation problems. If you compare the body of the post with your comment, you can come up with the differences.