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Nature treasures

Science · Class 6 · All

ScienceClass 6AllEasy
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The process of wearing away and removal of the fertile topsoil layer by natural forces like strong winds and flowing water is known as:

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All 25 questions in this quiz
  1. What is the core message of the concept known as 'Sustainable Development' regarding natural resources?

    1. Consume all natural treasures as fast as possible to maximize immediate wealth
    2. Use natural resources wisely to meet present needs without compromising the ability of future generations to meet theirs
    3. Stop using all forms of technology and return to ancient cave living permanently
    4. Replace all natural soil, forests, and rivers with artificial concrete blocks
  2. Why are national parks and wildlife sanctuaries established by governments worldwide?

    1. To clear out all trees and build large amusement parks
    2. To protect endangered species, conserve natural habitats, and maintain ecological balance
    3. To catch all wild animals and lock them in small metal cages for entertainment
    4. To store industrial chemical waste safely away from cities
  3. Which of the following is a major consequence of over-extracting groundwater using deep tubewells for agriculture?

    1. The groundwater table drops significantly, causing shallow wells to go dry
    2. The ground turns into an active volcanic zone instantly
    3. Rainwater stops falling from the sky completely
    4. The water turns into liquid gold metal
  4. Natural resources that can be replenished or reproduced by natural cycles over relatively short periods are classified as:

    1. Non-renewable resources
    2. Renewable resources
    3. Exhaustible resources
    4. Fossil resources
  5. Which of the following organisms helps maintain nature's treasure of soil fertility by aerating the earth and creating nutrient-rich castings?

    1. Mosquito
    2. Earthworm
    3. Locust
    4. Housefly
  6. What type of energy resource relies on the internal heat energy stored deep within the Earth's crust?

    1. Solar energy
    2. Geothermal energy
    3. Wind energy
    4. Hydroelectric energy
  7. Which of the following is a sustainable habit that helps conserve nature's treasures?

    1. Leaving household taps running continuously while brushing teeth
    2. Following the 3R principle: Reduce, Reuse, and Recycle
    3. Burning plastic sheets in open backyards daily
    4. Cutting down forest trees to make space for parking lots
  8. What is the main environmental problem caused by disposing of household garbage and chemical waste directly into fertile soil?

    1. Increased soil fertility and crop yields
    2. Soil pollution, which harms plants, soil organisms, and groundwater quality
    3. Conversion of the soil into clear drinking water
    4. Immediate formation of oil reserves under the ground
  9. How do forests help maintain the balance of oxygen and carbon dioxide gases in the atmosphere?

    1. Trees absorb oxygen and release carbon dioxide during the daytime hours
    2. Trees absorb carbon dioxide for photosynthesis and release oxygen back into the air
    3. Trees produce nitrogen gas to destroy all other atmospheric gases
    4. Trees prevent any gases from moving through the sky
  10. Which of the following is a non-metallic mineral resource widely used in construction to manufacture cement?

    1. Iron ore
    2. Limestone
    3. Copper
    4. Silver
  11. The process of digging out valuable minerals and fossil fuels from deep inside the Earth's crust is called:

    1. Sifting
    2. Mining
    3. Agriculture
    4. Churning
  12. Natural resources like wind and tidal energy are called 'inexhaustible' because:

    1. They can be used up completely in a single day
    2. They are powered by continuous natural processes that will never run out
    3. They are made entirely of artificial plastic material
    4. They can only be found in underground mines
  13. What is the primary ecological hazard associated with the excessive burning of fossil fuels like coal and petroleum?

    1. Immediate freezing of all ocean waters globally
    2. Release of harmful air pollutants and greenhouse gases like carbon dioxide, leading to global warming
    3. Complete loss of gravity across the planet
    4. Instant conversion of all soil into fine gold powder
  14. Which of the following is an example of a metallic mineral resource extracted from the Earth?

    1. Coal
    2. Limestone
    3. Bauxite (Aluminum ore)
    4. Quartz sand
  15. Wild animals and native plants living in their natural environments without human cultivation or domestication are collectively known as:

    1. Livestock
    2. Crops
    3. Wildlife
    4. Aquaculture
  16. Which of the following practices helps conserve groundwater by collecting and directing rainwater into the ground?

    1. Open-pit mining
    2. Rainwater harvesting
    3. Deforestation
    4. Over-irrigation
  17. Why is fresh, clean water considered an invaluable treasure of nature that must be conserved?

    1. Because water covers 100 percent of the Earth's surface as fresh drinking fluid
    2. Because only a very small fraction (less than 1%) of the Earth's water is accessible fresh water suitable for human use
    3. Because water can be manufactured easily in chemical factories whenever needed
    4. Because fresh water is a solid metal resource
  18. Fossil fuels like coal and petroleum are formed from:

    1. Volcanic ash mixed with industrial chemicals
    2. The remains of ancient plants and marine organisms buried deep inside the Earth for millions of years
    3. Frozen river water exposed to intense magnetism
    4. Plastic waste dumped in landfill sites
  19. What is the practice of planting new trees on a large scale on barren or deforested land called?

    1. Deforestation
    2. Mining
    3. Afforestation
    4. Industrialization
  20. How do the roots of trees and dense vegetation actively protect nature's treasure of soil?

    1. By absorbing all the minerals so the soil becomes completely empty
    2. By binding soil particles tightly together, preventing them from being washed away
    3. By turning the soil into hard volcanic rock
    4. By blocking sunlight from ever hitting the ground level
  21. Which of the following human activities is a primary cause of the destruction of forests and loss of natural habitats?

    1. Afforestation
    2. Deforestation
    3. Rainwater harvesting
    4. Composting
  22. The process of wearing away and removal of the fertile topsoil layer by natural forces like strong winds and flowing water is known as:

    1. Soil formation
    2. Soil erosion
    3. Afforestation
    4. Crop rotation
  23. Which of the following natural treasures forms the top layer of the Earth's surface and is essential for growing food crops?

    1. Bedrock
    2. Core
    3. Soil
    4. Mantle
  24. What is the term used for resources that are present in limited quantities and can be completely exhausted by continuous human use?

    1. Inexhaustible resources
    2. Non-renewable resources
    3. Artificial resources
    4. Continuous resources
  25. Which of the following is considered a renewable natural resource?

    1. Coal
    2. Petroleum
    3. Sunlight
    4. Iron ore