Mind Map: Resources | Social Studies & Pedagogy Paper 2 for CTET & TET Exams - CTET & State TET PDF Download

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1. What are some common renewable resources?
Ans. Common renewable resources include solar energy, wind energy, hydroelectric power, biomass, and geothermal energy. These resources are naturally replenished and have minimal impact on the environment.
2. How does solar energy work?
Ans. Solar energy is generated by capturing the sun's energy using photovoltaic (PV) cells. These cells convert sunlight into electricity through the photovoltaic effect. When sunlight strikes the PV cells, electrons are released, creating an electric current that can be used to power various devices or stored in batteries.
3. What are the advantages of using wind energy?
Ans. Wind energy has several advantages. It is a clean source of energy that does not produce greenhouse gas emissions or air pollutants. It is also abundant and inexhaustible, making it a sustainable option. Additionally, wind turbines can be installed on land or offshore, providing flexibility in harnessing this resource.
4. How does hydroelectric power work?
Ans. Hydroelectric power harnesses the energy of moving water, such as rivers or waterfalls, to generate electricity. It involves the construction of dams, which create a reservoir of water. When the water is released, it flows through turbines, spinning them and producing electricity through generators. The amount of electricity generated depends on the volume and height of the falling water.
5. What is biomass and how is it used as a renewable resource?
Ans. Biomass refers to organic matter, such as plant material or animal waste, that can be used as a source of energy. It can be converted into biofuels, such as ethanol or biodiesel, which can be used as alternatives to fossil fuels. Biomass can also be burned directly to produce heat or electricity. It is considered a renewable resource because new plants can be grown to replace the ones used for biomass energy.
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