Question

Give names of renewable non-polluting sources of energy.

Answer 1

1. Solar: Converts sunlight to electricity or heat using photovoltaic panels or solar thermal collectors; produces no direct air pollution.
2. Wind: Uses turbines to turn wind’s kinetic energy into electricity; no direct emissions during operation.
3. Hydroelectric (moving/falling water): Flowing or stored water drives turbines to make electricity; operationally low‑emission (but large dams can have other environmental impacts).
4. Tidal and wave (ocean energy): Captures energy from tides, currents, or waves to generate power; renewable and low‑emission.
5. Geothermal: Taps the Earth’s internal heat for electricity and heating with minimal direct emissions.