Natural Resources (9 Science)
Natural resources are materials and energy sources that occur naturally on Earth. Soil, air, and water are essential components of the biosphere that suppo
TL;DR: Natural resources are materials and energy sources that occur naturally on Earth. Soil, air, and water are essential components of the biosphere that…
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Natural resources are materials and energy sources that occur naturally on Earth. Soil, air, and water are essential components of the biosphere that suppo
Natural Resources MCQs with Answers & Explanations
Q1. Which of the following is a renewable resource?
- Coal
- Petroleum
- Forests ✓ (correct)
- Natural gas
Q2. The process by which water changes from liquid to gas is called:
- Condensation
- Precipitation
- Evaporation ✓ (correct)
- Sublimation
Q3. Which atmospheric layer is closest to the Earth's surface?
- Stratosphere
- Mesosphere
- Troposphere ✓ (correct)
- Thermosphere
Q4. The primary source of energy for all life on Earth is:
- Coal
- The sun ✓ (correct)
- Geothermal energy
- Nuclear energy
Q5. Which gas makes up approximately 78% of Earth's atmosphere?
- Oxygen
- Carbon dioxide
- Nitrogen ✓ (correct)
- Argon
Q6. Soil formation occurs through:
- Precipitation only
- Weathering of rocks and accumulation of organic matter ✓ (correct)
- Wind erosion
- Water erosion
Q7. Which of the following is NOT a component of soil?
- Mineral particles
- Organic matter
- Water
- Atmospheric pressure ✓ (correct)
Q8. The groundwater table refers to:
- The surface of the ocean
- The level below which soil is saturated with water ✓ (correct)
- The depth of rivers
- The atmosphere above ground
Q9. Which process removes nitrogen from the atmosphere and converts it into a usable form?
- Photosynthesis
- Respiration
- Nitrogen fixation ✓ (correct)
- Decomposition
Q10. Deforestation leads to all of the following EXCEPT:
- Soil erosion
- Loss of biodiversity
- Increased rainfall ✓ (correct)
- Increased atmospheric CO2
Frequently Asked Questions
What are the three states of water in the water cycle?
Water exists as liquid in oceans and rivers, as solid (ice) in glaciers and poles, and as gas (water vapor) in the atmosphere. These states change through evaporation, condensation, and precipitation.
Why is soil conservation important?
Soil is essential for agriculture, stores water and nutrients, supports plant growth, and acts as a carbon sink. Loss of soil reduces fertility, increases erosion, and threatens food security.
More 9 Science MCQs
- Light Reflection and Refraction
- Electricity
- Acids Bases and Salts
- Life Processes
- Carbon and its Compounds
- Metals and Non-metals
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