Nature treasures
Science · Class 6 · All
The process of wearing away and removal of the fertile topsoil layer by natural forces like strong winds and flowing water is known as:
All 25 questions in this quiz
What is the core message of the concept known as 'Sustainable Development' regarding natural resources?
- Consume all natural treasures as fast as possible to maximize immediate wealth
- Use natural resources wisely to meet present needs without compromising the ability of future generations to meet theirs
- Stop using all forms of technology and return to ancient cave living permanently
- Replace all natural soil, forests, and rivers with artificial concrete blocks
Why are national parks and wildlife sanctuaries established by governments worldwide?
- To clear out all trees and build large amusement parks
- To protect endangered species, conserve natural habitats, and maintain ecological balance
- To catch all wild animals and lock them in small metal cages for entertainment
- To store industrial chemical waste safely away from cities
Which of the following is a major consequence of over-extracting groundwater using deep tubewells for agriculture?
- The groundwater table drops significantly, causing shallow wells to go dry
- The ground turns into an active volcanic zone instantly
- Rainwater stops falling from the sky completely
- The water turns into liquid gold metal
Natural resources that can be replenished or reproduced by natural cycles over relatively short periods are classified as:
- Non-renewable resources
- Renewable resources
- Exhaustible resources
- Fossil resources
Which of the following organisms helps maintain nature's treasure of soil fertility by aerating the earth and creating nutrient-rich castings?
- Mosquito
- Earthworm
- Locust
- Housefly
What type of energy resource relies on the internal heat energy stored deep within the Earth's crust?
- Solar energy
- Geothermal energy
- Wind energy
- Hydroelectric energy
Which of the following is a sustainable habit that helps conserve nature's treasures?
- Leaving household taps running continuously while brushing teeth
- Following the 3R principle: Reduce, Reuse, and Recycle
- Burning plastic sheets in open backyards daily
- Cutting down forest trees to make space for parking lots
What is the main environmental problem caused by disposing of household garbage and chemical waste directly into fertile soil?
- Increased soil fertility and crop yields
- Soil pollution, which harms plants, soil organisms, and groundwater quality
- Conversion of the soil into clear drinking water
- Immediate formation of oil reserves under the ground
How do forests help maintain the balance of oxygen and carbon dioxide gases in the atmosphere?
- Trees absorb oxygen and release carbon dioxide during the daytime hours
- Trees absorb carbon dioxide for photosynthesis and release oxygen back into the air
- Trees produce nitrogen gas to destroy all other atmospheric gases
- Trees prevent any gases from moving through the sky
Which of the following is a non-metallic mineral resource widely used in construction to manufacture cement?
- Iron ore
- Limestone
- Copper
- Silver
The process of digging out valuable minerals and fossil fuels from deep inside the Earth's crust is called:
- Sifting
- Mining
- Agriculture
- Churning
Natural resources like wind and tidal energy are called 'inexhaustible' because:
- They can be used up completely in a single day
- They are powered by continuous natural processes that will never run out
- They are made entirely of artificial plastic material
- They can only be found in underground mines
What is the primary ecological hazard associated with the excessive burning of fossil fuels like coal and petroleum?
- Immediate freezing of all ocean waters globally
- Release of harmful air pollutants and greenhouse gases like carbon dioxide, leading to global warming
- Complete loss of gravity across the planet
- Instant conversion of all soil into fine gold powder
Which of the following is an example of a metallic mineral resource extracted from the Earth?
- Coal
- Limestone
- Bauxite (Aluminum ore)
- Quartz sand
Wild animals and native plants living in their natural environments without human cultivation or domestication are collectively known as:
- Livestock
- Crops
- Wildlife
- Aquaculture
Which of the following practices helps conserve groundwater by collecting and directing rainwater into the ground?
- Open-pit mining
- Rainwater harvesting
- Deforestation
- Over-irrigation
Why is fresh, clean water considered an invaluable treasure of nature that must be conserved?
- Because water covers 100 percent of the Earth's surface as fresh drinking fluid
- Because only a very small fraction (less than 1%) of the Earth's water is accessible fresh water suitable for human use
- Because water can be manufactured easily in chemical factories whenever needed
- Because fresh water is a solid metal resource
Fossil fuels like coal and petroleum are formed from:
- Volcanic ash mixed with industrial chemicals
- The remains of ancient plants and marine organisms buried deep inside the Earth for millions of years
- Frozen river water exposed to intense magnetism
- Plastic waste dumped in landfill sites
What is the practice of planting new trees on a large scale on barren or deforested land called?
- Deforestation
- Mining
- Afforestation
- Industrialization
How do the roots of trees and dense vegetation actively protect nature's treasure of soil?
- By absorbing all the minerals so the soil becomes completely empty
- By binding soil particles tightly together, preventing them from being washed away
- By turning the soil into hard volcanic rock
- By blocking sunlight from ever hitting the ground level
Which of the following human activities is a primary cause of the destruction of forests and loss of natural habitats?
- Afforestation
- Deforestation
- Rainwater harvesting
- Composting
The process of wearing away and removal of the fertile topsoil layer by natural forces like strong winds and flowing water is known as:
- Soil formation
- Soil erosion
- Afforestation
- Crop rotation
Which of the following natural treasures forms the top layer of the Earth's surface and is essential for growing food crops?
- Bedrock
- Core
- Soil
- Mantle
What is the term used for resources that are present in limited quantities and can be completely exhausted by continuous human use?
- Inexhaustible resources
- Non-renewable resources
- Artificial resources
- Continuous resources
Which of the following is considered a renewable natural resource?
- Coal
- Petroleum
- Sunlight
- Iron ore