EVS Unit 2: Food Resources and Land Use Mapping
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Questions and Answers

What percentage of tropical forests may be lost in the coming six decades if the current rate of deforestation continues?

  • 60%
  • 50%
  • 70%
  • 90% (correct)
  • Which region shows a declining trend in forest area, particularly in the tropical region?

  • North America
  • Europe
  • Australia
  • Asia (correct)
  • What is estimated to be the principal cause of deforestation in Africa, Asia, and tropical America according to the text?

  • Shifting cultivation (correct)
  • Expansion for agribusiness
  • Need for fuel wood
  • Commercial logging
  • In which areas is shifting cultivation prevalent according to the text?

    <p>Northeast India</p> Signup and view all the answers

    What practice involves clearing forest lands to grow subsistence crops in tribal areas?

    <p>Shifting cultivation</p> Signup and view all the answers

    Which activity is NOT mentioned as a cause of deforestation in the text?

    <p>Marine conservation efforts</p> Signup and view all the answers

    What is the primary source of tidal energy?

    <p>Gravitational attraction between celestial bodies</p> Signup and view all the answers

    What creates corresponding motions or currents in the world's oceans?

    <p>Tidal forces</p> Signup and view all the answers

    Why are the changes in sea levels due to tidal forces highly regular and predictable?

    <p>Due to the consistent pattern of the Earth's rotation and the Moon's orbit</p> Signup and view all the answers

    What do the magnitude and variations of tidal motions reflect?

    <p>Changing positions of the Moon and Sun relative to the Earth</p> Signup and view all the answers

    What determines the predictability of tidal changes?

    <p>Local geography of seafloor and coastlines</p> Signup and view all the answers

    What can be defined as any material which can be transformed in a way that it becomes more valuable and useful?

    <p>Natural resource</p> Signup and view all the answers

    Which process is responsible for the transformation of valuable items from resources?

    <p>Resource extraction</p> Signup and view all the answers

    What is the term used to describe the decline in the quality of land resources due to various factors like overgrazing and agriculture?

    <p>Land degradation</p> Signup and view all the answers

    Which type of energy resource includes fossil fuels like coal and their advantages and limitations?

    <p>Non-renewable energy</p> Signup and view all the answers

    What is the term for the process by which fertile land becomes desert-like due to various factors like climate change and human activities?

    <p>Desertification</p> Signup and view all the answers

    Which form of energy resource relies on capturing energy from the sun, wind, or geothermal sources?

    <p>Solar energy</p> Signup and view all the answers

    What type of relief features are found in India according to the text?

    <p>Mountains, plateaus, and plains</p> Signup and view all the answers

    What is the process called when the soil cover is denuded and washed down?

    <p>Soil erosion</p> Signup and view all the answers

    What is the cause of soil erosion according to the text?

    <p>Both natural forces and human activities</p> Signup and view all the answers

    What is the term used for the deep channels created by running water cutting through clayey soils?

    <p>Gullies</p> Signup and view all the answers

    What is the name given to the process where water flows as a sheet over large areas down a slope, washing away the topsoil?

    <p>Sheet erosion</p> Signup and view all the answers

    What is the term used for the process where wind blows loose soil off flat or sloping land?

    <p>Wind erosion</p> Signup and view all the answers

    What is the main benefit of recycling aluminum products compared to refining bauxite?

    <p>Recycling aluminum requires less electric power</p> Signup and view all the answers

    According to the passage, which of the following minerals can also be recycled?

    <p>Nickel, chromium, lead, copper, and zinc</p> Signup and view all the answers

    What is the purpose of the laws mentioned in the passage?

    <p>To ensure efficient management of mining resources</p> Signup and view all the answers

    What is the role of the Aravalli mountain range mentioned in the passage?

    <p>It plays an important role in controlling the climate and acting as a mini water shed</p> Signup and view all the answers

    What was the impact of marble mining near Rajsamand Lake?

    <p>It led to the drying up of the lake</p> Signup and view all the answers

    What is the main source of food for the majority of people according to the passage?

    <p>Cultivated plants and domesticated animals</p> Signup and view all the answers

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