Posted on : 31 Jan 2020Views: 621
- Wild bushfires have been ravaging Australia for several weeks now. These fires have been especially severe in the New South Wales and Victoria.
- The State declared a week-long state of emergency in response to the escalating disaster.
- 916 homes have been destroyed this season, 363 more have been damaged.
- Both New South Wales and Victoria have given fire fighting authorities the power to forcibly relocate people.
- Bushfires in Australia impact extensive areas and cause property damage and loss of human life.
- Some of Australia's native flora has evolved to rely on bushfires as a means of reproduction, and fire events are an interwoven and an essential part of the ecology of the continent.
- For thousands of years, Indigenous Australians have used fire to foster grasslands for hunting and to clear tracks through dense vegetation.
- Major firestorms that result in severe loss of life are often named based on the day on which they occur, such as Ash Wednesday and Black Saturday.
- Some of the most intense, extensive and deadly bushfires commonly occur during droughts and heat waves.
- One type of wildfire is known as a bushfire, an uncontrolled fire that burns through scrubland, which is common to Australia.
- Like all wildfires, a bushfire places nature and man under threat.
- There are many factors that lead to a bushfire or influence its spread. This includes the type of fuel. Some grasses as well as twigs can burn very quickly. On the other hand, large tree trunks don't burn as easily.
- The moisture of the fuel is another critical factor. Fuel that's wet is unlikely to burn. Similarly, increased humidity decreases the chances that a bushfire will start.
- On the flipside, lower humidity, higher temperature, and drier conditions all help ignite and spread a fire.
- Wind plays a key part in the spread of bushfires too. Wind provides much needed oxygen for a fire.
- A bushfire will spread up a hill much faster than it will down a hill due to the processes of convection and radiation.
- It's an explosive storm called pyro cumulonimbus and it can inject particles as high as 10 miles into the air.
- During a fire, heat and moisture from the plants are released, even when the fuel is relatively dry.
- Warm air is less dense than cold air so it rises, releasing the moisture and forming a cloud that lifts and ends up a thunderstorm started by fire.
Article Related Questions
Consider the following statements regarding Bushfire that has caused a devastating fire in Australia
1.It is an uncontrolled fire that burns through scrubland.
2.Wind plays a key part in the spread of bushfires.
3.Eucalyptus trees were the major factor for the fire.
Which of the following statement is/are correct?
1.1 and 2 only
2.2 and 3 only
3.1 and 3 only
4.1, 2 and 3
Right Ans : 1, 2 and 3