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Questions and Answers
Which of the following is considered a renewable resource?
Which of the following is considered a renewable resource?
Which of the following is an example of biomass energy?
Which of the following is an example of biomass energy?
Non-renewable resources can be replenished after consumption.
Non-renewable resources can be replenished after consumption.
False (B)
Fast-growing trees like cottonwood and poplar are considered energy plantations.
Fast-growing trees like cottonwood and poplar are considered energy plantations.
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Name one major type of natural resource.
Name one major type of natural resource.
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What is the primary method of energy production from agricultural and urban waste biomass?
What is the primary method of energy production from agricultural and urban waste biomass?
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In Brazil, _____ of electricity is obtained from burning bagasse.
In Brazil, _____ of electricity is obtained from burning bagasse.
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Forests cover about _____ of the earth's land area.
Forests cover about _____ of the earth's land area.
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Match the following resources with their types:
Match the following resources with their types:
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Match the following biomass types with their examples:
Match the following biomass types with their examples:
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Which resource can become non-renewable if over-exploited?
Which resource can become non-renewable if over-exploited?
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It is important to protect and conserve natural resources.
It is important to protect and conserve natural resources.
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What has been a significant concern regarding forest resources?
What has been a significant concern regarding forest resources?
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What is one of the commercial uses of forests according to the text?
What is one of the commercial uses of forests according to the text?
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Forests provide environmental uses that have a higher annual value than commercial uses.
Forests provide environmental uses that have a higher annual value than commercial uses.
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What type of energy is harnessed from hot rocks inside the earth?
What type of energy is harnessed from hot rocks inside the earth?
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The energy produced using the temperature difference between surface water and deeper water in the ocean is called __________ energy.
The energy produced using the temperature difference between surface water and deeper water in the ocean is called __________ energy.
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Match the types of energy with their descriptions:
Match the types of energy with their descriptions:
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Which of the following is NOT listed as a benefit of forests?
Which of the following is NOT listed as a benefit of forests?
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The colder water from the deeper oceans is used to boil a liquid for Ocean Thermal Energy conversion.
The colder water from the deeper oceans is used to boil a liquid for Ocean Thermal Energy conversion.
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What is one method used to extract geothermal energy when steam does not naturally come out from the earth?
What is one method used to extract geothermal energy when steam does not naturally come out from the earth?
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Study Notes
Natural Resources
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Life on Earth depends on goods and services from nature (e.g., water, air, soil, minerals, forests, wildlife).
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Natural resources can be renewable or non-renewable.
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Renewable resources are inexhaustive (e.g., forests, wildlife, wind energy, biomass energy, tidal energy, hydro power).
- Solar energy is also a renewable resource.
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Non-renewable resources cannot be regenerated and once exhausted, cannot be replenished. (e.g., fossil fuels, coal, petroleum, minerals)
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Even renewable resources can become non-renewable if exploited to the point their regeneration rate is exceeded. (e.g., endangered or extinct species)
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It's important to protect and conserve natural resources.
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Resources should be used judiciously for future generations.
Forest Resources
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Forests cover a significant portion of Earth's landmass.
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Forests provide valuable commercial and environmental services.
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Forests have immense economic value for industry, rural development, and poverty reduction.
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Forests regulate the water cycle
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Forests produce oxygen.
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Forests absorb pollutants.
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Forests are habitats for a vast number (7 million) of wild animals and plants.
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Forests act as sponges absorbing rainfall, regulating runoff and recharging springs.
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Forests affect moisture in the atmosphere, influencing rainfall patterns.
Overexploitation of Forests
- Forests have a huge potential for human use.
- Forests have been extensively exploited since early times to meet human demands.
Major Causes of Deforestation
- Shifting cultivation: 300 million people practice slash-and-burn agriculture, clearing large areas of forest for crops.
- Increasing demands for fuel-wood by the growing human population, putting pressure on forests.
- Raw materials for industries (e.g., plywood, furniture) increase demand on forest resources.
- Construction of large projects (e.g., dams, roads) requires immense amounts of land, much of which is forest.
- Overgrazing puts pressure on forest lands turning them into grazing lands.
- Forest fires, be they natural or man-made, damage large areas of forest.
Case Studies
- The Himalayan region, facing desertification due to deforestation, impacting the ecosystem, nutrient cycling and soil quality.
- Tea gardens in the Chhota Nagpur region, disappearing due to declining rainfall, impacting tea cultivation.
- Declining rainfall in the Nilgiri mountains, affecting rainfall patterns.
- Mining and quarrying activities disrupting ecosystems and causing damage.
- Projects like the Sardar Sarovar Dam displace people and cause environmental damage.
Water Resources
- Water is essential for all life on Earth.
- About 97% of Earth's water is salty.
- Only a very small percentage of freshwater is readily available for use.
- Overuse of groundwater depletes reserves and creates salinity problems.
- Water is heavily used in agriculture and industry due to increasing population.
- Contamination of groundwater due to mining activities.
- Flooding and droughts are common consequences impacting agricultural production, economic stability, and human health.
Mineral Resources
- Minerals are naturally occurring, inorganic, crystalline solids with specific properties.
- Minerals form the foundation of many industrial processes and products.
- Minerals are critical for construction materials, energy production, industrial applications and technological infrastructure, and even personal adornments.
- Important usage of minerals :development of industrial plants and machinery; generation of energy; construction; defense equipments; transportation; communication; medicinal purposes; agricultural purposes; and jewelry.
- Mining activities affect local communities, ecosystems, and water quality.
- Mining can lead to impacts like subsidence, land degradation, and environmental pollution.
Case Studies
- Issues of contamination in mining regions, affecting human health and local water supplies.
- Mining operations in regions that overlap with protected ecosystems (e.g., tiger reserves) damaging biodiversity and impacting local populations.
- Mining operations and groundwater contamination.
Food Resources
- Thousands of edible plants and animals constitute human food.
- Major food resources include wheat, rice, maize, potatoes, cassava, pulses, fruits, vegetables, milk, meat, fish, and seafood.
Energy Resources
- Energy is essential for development and daily activities.
- Fossil fuels (coal, petroleum, natural gas) are major sources of energy and are finite (petroleum, natural gas in particular).
- Renewable sources (solar, wind, hydropower) are now becoming vital and are constantly being explored.
- Biomass is organic matter that can be used for energy generation.
- Biomass can be processed into biogas, which is an alternative energy source.
- Nuclear energy is powerful, but has safety concerns due to nuclear waste disposal concerns.
Case Studies
- Issues in water management and the various competing demands.
- Conflicts over water resources, such as the Cauvery water dispute, highlighting the complexities of balancing the use of shared water resources.
Types of Energy
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Solar energy harnesses energy from the sun.
- There are passive and active solar energy collection methods.
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Wind energy uses wind turbines to generate electricity.
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Hydropower uses the energy of flowing water to spin turbines, producing electricity.
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Tidal energy uses the rise and fall of tides to generate electricity.
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Geothermal energy uses heat from within the Earth.
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Biomass energy converts organic matter into energy.
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Biogas is one form of biogas, converted from organic materials like animals wastes, manure.
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Nuclear energy uses nuclear reactions to create heat for generating steam to produce electricity.
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Description
Test your knowledge on renewable resources, biomass energy, and the importance of natural resource conservation. This quiz covers various topics including the types of resources, methods of energy production, and the environmental significance of forests.
