Q1
What does solar energy use?
APhotovoltaic cells or solar thermal systems
BOnly wind turbines
COnly flowing water
DOnly fossil fuels
SSCClass 10 (SSC)Science and Technology (विज्ञान आणि तंत्रज्ञान)Ch 15 · Topic 2
Practice and Revision - Towards Green Energy
Let us practise and revise what we learned about towards green energy. Green energy refers to renewable, environmentally friendly energy sou
Core concept
Solar energy harnesses sunlight using photovoltaic cells or solar thermal systems, providing a clean, abundant, renewable energy source.
How it works
Wind energy uses turbines to convert wind's kinetic energy into electricity, growing rapidly as a clean energy source worldwide.
Why it matters
Hydropower generates electricity from flowing or falling water, providing a reliable, established renewable energy source in many regions.
Key detail
Transitioning to green energy is essential for reducing greenhouse gas emissions, combating climate change, and ensuring sustainable energy for the future.
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Quick notes
• Solar energy: photovoltaic cells, solar thermal.
• Clean, abundant, renewable source.
• Wind energy: turbines convert kinetic energy.
• Growing rapidly worldwide.
• Hydropower: from flowing/falling water.
• Reliable, established renewable source.
• Green energy reduces greenhouse emissions.
• Essential for combating climate change.