Classification of Natural Resources
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Questions and Answers

What is the primary original purpose of windmills?

  • Navigating boats
  • Generating electricity
  • Milling grain (correct)
  • Pumping water

    • At what wind speed does a wind farm typically need to shut down to prevent damage?

  • 10 m/s
  • 25 m/s (correct)
  • 15 m/s
  • 20 m/s

    • Which of the following is NOT an advantage of wind energy?

  • It can be used directly as mechanical energy.
  • It is an inexhaustible source of energy.
  • It does not pollute the environment.
  • It is completely predictable and reliable. (correct)

    • What is a common drawback associated with wind energy production?

    <p>High noise pollution (B)</p> Signup and view all the answers

    Which is a challenge associated with wind energy transmission?

    <p>It must be transmitted from remote locations. (A)</p> Signup and view all the answers

    Which of the following describes a situation where wind energy can be effectively harnessed?

    <p>In remote areas with strong winds throughout the year (D)</p> Signup and view all the answers

    How does wind energy compare to fossil fuel power plants in terms of efficiency?

    <p>Wind energy is less efficient on average. (A)</p> Signup and view all the answers

    What is a significant drawback of using wind turbines?

    <p>They can be easily damaged by birds flying into them. (A), They are difficult to maintain due to high mechanical wear. (B)</p> Signup and view all the answers

    What impact does wind energy production have on local wildlife?

    <p>It poses a threat to wildlife. (A)</p> Signup and view all the answers

    What are the benefits of geothermal energy compared to fossil fuels?

    <p>It is available consistently throughout the year. (B)</p> Signup and view all the answers

    What is bioenergy primarily derived from?

    <p>Organic matter and biomass. (B)</p> Signup and view all the answers

    What are some potential environmental risks of geothermal energy?

    <p>Release of toxic fluids and hydrogen sulfide gas. (A)</p> Signup and view all the answers

    Which energy source is considered sustainable and produced from natural organic wastes?

    <p>Biogas. (C)</p> Signup and view all the answers

    How does hydropower generate electricity?

    <p>From the energy captured from flowing water. (B)</p> Signup and view all the answers

    What aspect of wind energy can lead to bird fatalities?

    <p>Birds fly into the turbine blades. (A)</p> Signup and view all the answers

    What describes the main purpose of forests based on their resources?

    <p>To provide environmental services essential for life. (D)</p> Signup and view all the answers

    What is a result of the unpleasant greenish slimy layer formed on the surface of a water body?

    <p>Suffocation of aquatic organisms (A)</p> Signup and view all the answers

    What is the recommended maximum water usage for flushing toilets?

    <p>6 liters (D)</p> Signup and view all the answers

    What type of aquifer allows water to seep through an above permeable layer?

    <p>Unconfined aquifer (D)</p> Signup and view all the answers

    What is one of the objectives of rainwater harvesting?

    <p>Avoid flooding of roads (A)</p> Signup and view all the answers

    Which practice is encouraged to promote water conservation in gardening?

    <p>Implementing a small system of rainwater harvesting (B)</p> Signup and view all the answers

    What are gutters and downtake pipes used for in rainwater harvesting systems?

    <p>To lead water from the catchment to storage (C)</p> Signup and view all the answers

    What is a consequence of over-irrigation in agricultural lands?

    <p>Increased salinity effect (D)</p> Signup and view all the answers

    Why is rainwater harvesting considered essential?

    <p>To address inadequate surface water supply (A)</p> Signup and view all the answers

    Which of the following is a major source of plant food?

    <p>Cereal grains (D)</p> Signup and view all the answers

    Which component of a rainwater harvesting system is responsible for collecting rainwater?

    <p>Catchment (B)</p> Signup and view all the answers

    What environmental issue arises mainly from modern agricultural practices?

    <p>Degradation of water and land environment (B)</p> Signup and view all the answers

    What happens to the water body when anaerobic conditions prevail?

    <p>Production of toxins in algae (C)</p> Signup and view all the answers

    What is a common method employed for traditional rainwater harvesting?

    <p>Constructing pits and check-dams (B)</p> Signup and view all the answers

    Which type of food is considered the most preferred by humans?

    <p>Mutton and beef (B)</p> Signup and view all the answers

    Which of the following practices is considered unsustainable in waste management?

    <p>Throwing solid wastes on open land (D)</p> Signup and view all the answers

    What is the most significant issue related to food resources in terms of environmental impact?

    <p>Overconsumption of resources by wealthier nations (A)</p> Signup and view all the answers

    What characterizes sheet erosion?

    <p>It involves uniform removal of a thin layer of soil over a large area. (D)</p> Signup and view all the answers

    Which type of erosion can develop into gully erosion?

    <p>Rill erosion (B)</p> Signup and view all the answers

    What is a major cause of desertification related to land use?

    <p>Deforestation. (D)</p> Signup and view all the answers

    Which statement correctly defines slip erosion?

    <p>It involves the downward movement of soil on slopes due to heavy rainfall. (B)</p> Signup and view all the answers

    What factor increases the risk of soil erosion in grazed areas?

    <p>Overgrazing, leading to denuded land. (D)</p> Signup and view all the answers

    How does stream bank erosion primarily occur?

    <p>When fast flowing river water erodes soil from the river bank. (A)</p> Signup and view all the answers

    What is a recommended practice to prevent water wastage?

    <p>Check for water leaks in pipelines and taps. (B)</p> Signup and view all the answers

    Which of the following best describes the consequences of mining and quarrying?

    <p>They lead to the loss of vegetation and land degradation. (B)</p> Signup and view all the answers

    What is one of the most serious problems associated with mining sectors?

    <p>Acid-mine drainage (B)</p> Signup and view all the answers

    Which of the following is a direct consequence of sub-surface mining?

    <p>Devegetation and defacing of landscape (D)</p> Signup and view all the answers

    What is a consequence of the atmospheric releases from sulphide roasting?

    <p>Formation of sulfur dioxide gas (B)</p> Signup and view all the answers

    How does mining activity affect the hydrological process?

    <p>Disturbs the natural hydrological process (C)</p> Signup and view all the answers

    Which of the following environmental issues is associated with the use of heavy machinery in mining?

    <p>Noise pollution (B)</p> Signup and view all the answers

    What impact does mining in forested areas typically have on local populations?

    <p>Displacement of tribal and local population (B)</p> Signup and view all the answers

    What kind of waste is formed by slurries of finely ground particles in mining?

    <p>Industrial waste containing additives (C)</p> Signup and view all the answers

    Which risk is associated with sub-surface mining methods?

    <p>Occupational hazards and accidents (D)</p> Signup and view all the answers

    Study Notes

    Natural Resources

    • Occur naturally within environments undisturbed by humans.
    • Include substances, energy units, and natural processes.
    • Examples include water, air, soil, minerals, coal, forests, crops, and wildlife.

    Classification of Natural Resources

    • Origin:
      • Biotic: Derived from living organisms (e.g., forests, animals, fossil fuels).
      • Abiotic: Derived from non-living, non-organic material (e.g., land, water, air, heavy metals).
    • Development:
      • Potential: Resources existing in a region but not yet used.
      • Developed: Resources surveyed, quantified, and used currently.
    • Renewability:
      • Renewable: Replenished naturally in a given timeframe (e.g., sunlight, air, wind).
      • Non-renewable: Formed extremely slowly, with replenishment rates significantly slower than consumption (e.g., minerals, fossil fuels).

    Energy Resources

    • Energy is the physical ability to do work, measured in Joules (J).
    • Power is energy per unit time, measured in Watts (W).
    • Used for cooking, heating, lighting, transportation, and manufacturing.
    • Renewable Resources: Inexhaustible and regenerated within a period (e.g., sunlight, wind, rain, geothermal).
    • Non-Renewable Resources: Exhaustible and not regenerated within a timeframe (e.g., fossil fuels, coal, petroleum, minerals).
    • Conventional vs. Non-conventional: Conventional resources are longstanding fuels (coal, petroleum, natural gas, and water), while non-conventional are newer resources (solar, wind, tidal).

    Coal

    • Composed primarily of carbon; also contains hydrogen, oxygen, and other minor elements.
    • Formed from decayed vegetation.
    • Widely used as a fuel.

    Solar Energy

    • The sun's rays used to generate heat or electricity.
    • Photovoltaic (PV) Energy: Directly converts sunlight into electricity.
    • Solar Thermal Power Plants: Heat a fluid using solar radiation to produce steam, which then generates electricity.

    Wind Energy

    • Air in motion, generated by uneven heating of the earth's surface.
    • Windmills capture wind energy and convert it to rotational energy, used to generate electricity.
    • Renewable source of energy.

    Hydropower Energy

    • Flowing water creates energy, captured and converted to electricity, often using dams.
    • Dams store water in reservoirs, releasing it through turbines, which spin generators to produce electricity.
    • Renewable, relatively low maintenance.

    Geothermal Energy

    • Heat from within the earth, used to generate electricity or heat buildings.
    • Geothermal energy is derived from the decay of radioactive elements deep underground.

    Bio Energy

    • Capturing solar energy by plants, converting it into biomass.
    • Biomass is a renewable source.
    • Used for fuel, as well as other purposes

    Nuclear Energy

    • Energy released in a nuclear reaction (e.g., nuclear fission).
    • Has the potential to generate large amounts of electricity.

    Forest Resources

    • Essential for many aspects of human life.
    • Source of a wide range of resources (timber, food, etc.)
    • Critical for regulating the environment (climate, water, biodiversity).

    Land Resources

    • Finite, valuable, and crucial for human use.
    • Soil is one type, which requires sustained management to prevent degradation.
    • Soil erosion and land degradation result from a variety of natural phenomena and human activity.

    Desertification

    • Gradual conversion of productive land to desert-like condition.
    • Caused by deforestation, overgrazing, and mineral extraction.

    Waste Associated with Mining

    • Waste materials produced during mineral extraction (Ore processing) are often discarded through temporary tailings
    • Surface and sub-surface mining results in various types of waste

    Water Resources

    • Essential for life on Earth.
    • Include oceans, seas, rivers, ponds, and aquifers (underground water reserves).

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    Unit 2 Natural Resources PDF

    Description

    Explore the various classifications of natural resources, including biotic and abiotic origins, as well as renewable and non-renewable types. This quiz will test your understanding of energy resources and their development stages. Evaluate your knowledge on how different resources interact with our environment.

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