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      • Fire is the result of a chemical reaction called combustion. At a certain point in the combustion reaction, called the ignition point, flames are produced. Ordinarily, flames consist primarily of carbon dioxide, water vapor, oxygen, and nitrogen.
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  2. The water cycle is also known as the. hydrological cycle. It is called a cycle because water continuously moves around the system. Rivers are part of this cycle. The illustration below shows...

  3. en.wikipedia.org › wiki › Water_cycleWater cycle - Wikipedia

    The water cycle (or hydrologic cycle or hydrological cycle), is a biogeochemical cycle that involves the continuous movement of water on, above and below the surface of the Earth. The mass of water on Earth remains fairly constant over time.

  4. This is called the water cycle. The water cycle is the journey water takes as it moves from the land to the sky and back again. Have a look at the stages of the water cycle.

    • the substance of fire is called a water or water cycle called1
    • the substance of fire is called a water or water cycle called2
    • the substance of fire is called a water or water cycle called3
    • the substance of fire is called a water or water cycle called4
    • the substance of fire is called a water or water cycle called5
  5. Fire (East) represents the birth cycle, spring, the Asian race, and tobacco medicine. Wind/Air (North) represents the elder cycle, winter, the European race, and sweetgrass medicine. Water (West) represents the adulthood cycle, autumn, the African race, and sage medicine.

  6. en.wikipedia.org › wiki › FireFire - Wikipedia

    • Etymology
    • History
    • Physical Properties
    • Fire Science
    • Fire Ecology
    • Prevention and Protection Systems
    • References
    • Further Reading
    • External Links

    The word "fire" originated from Old English Fyr 'Fire, a fire', which can be traced back to the Germanic root *fūr-, which itself comes from the Proto-Indo-European *perjos from the root *paewr- 'fire'. The current spelling of "fire" has been in use since as early as 1200, but it was not until around 1600 that it completely replaced the Middle Engl...

    Fossil record

    The fossil record of fire first appears with the establishment of a land-based flora in the Middle Ordovician period, 470 million years ago, permitting the accumulation of oxygen in the atmosphere as never before, as the new hordes of land plants pumped it out as a waste product. When this concentration rose above 13%, it permitted the possibility of wildfire. Wildfire is first recorded in the Late Silurian fossil record, 420 million years ago, by fossils of charcoalified plants. Apart from a...

    Chemistry

    Fire is a chemical process in which a fuel and an oxidizing agent react, yielding carbon dioxide and water. This process, known as a combustion reaction, does not proceed directly and involves intermediates. Although the oxidizing agent is typically oxygen, other compounds are able to fulfill the role. For instance, chlorine trifluoride is able to ignite sand. Fires start when a flammable or a combustible material, in combination with a sufficient quantity of an oxidizer such as oxygen gas or...

    Flame

    A flame is a mixture of reacting gases and solids emitting visible, infrared, and sometimes ultraviolet light, the frequency spectrum of which depends on the chemical composition of the burning material and intermediate reaction products. In many cases, such as the burning of organic matter, for example wood, or the incomplete combustion of gas, incandescent solid particles called soot produce the familiar red-orange glow of "fire". This light has a continuous spectrum. Complete combustion of...

    Fire science is a branch of physical science which includes fire behavior, dynamics, and combustion. Applications of fire science include fire protection, fire investigation, and wildfiremanagement.

    Every natural ecosystem on land has its own fire regime, and the organisms in those ecosystems are adapted to or dependent upon that fire regime. Fire creates a mosaic of different habitat patches, each at a different stage of succession.Different species of plants, animals, and microbes specialize in exploiting a particular stage, and by creating ...

    Wildfire prevention programs around the world may employ techniques such as wildland fire use and prescribed or controlled burns. Wildland fire use refers to any fire of natural causes that is monitored but allowed to burn. Controlled burnsare fires ignited by government agencies under less dangerous weather conditions. Fire fighting services are p...

    Sources

    1. Haung, Kai (2009). Population and Building Factors That Impact Residential Fire Rates in Large U.S. Cities. Applied Research Project Archived 2012-03-08 at the Wayback Machine. Texas State University. 2. Karki, Sameer (2002). Community Involvement in and Management of Forest Fires in South East Asia (PDF). Project FireFight South East Asia. Archived from the original (PDF) on February 25, 2009. Retrieved 2009-02-13. 3. Kosman, Admiel (January 13, 2011). "Sacred fire". Haaretz. 4. Lentile,...

    Pyne, Stephen J. Fire : a brief history (University of Washington Press, 2001).
    Safford, Hugh D., et al. "Fire ecology of the North American Mediterranean-climate zone." in Fire ecology and management: Past, present, and future of US forested ecosystems (2021): 337–392. re Cal...
    How Fire Works at HowStuffWorks
    What exactly is fire? from The Straight Dope
    On Fire, an Adobe Flash–based science tutorial from the NOVA(TV series)
    "20 Things You Didn't Know About... Fire" from Discovermagazine
  7. A classic example is the flame generated by burning acetylene in oxygen, which reaches an eye-watering 3100˚C. The paltry 1500˚C flame produced by a wax candle, on the other hand, is too low to be considered a textbook plasma.

  8. Fire is a chemical reaction that converts a fuel and oxygen into carbon dioxide and water. It is an exothermic reaction, in other words, one that produces heat.

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