Solar Power earth science collegeee.pptx

Solar Power

1. Major 12a: Earth Science Module 6: Earth’s Resources & its Conservation

2. SOLAR POWER

3. DISCUSSANTS Colo, Angelica Ni ñ a V. BSEd -Science 3 Lagrimas, Ronnel M. BSEd -Science 3

4. CONTENTS What is Solar Power? How is Solar Power used? Applications of Solar Power Importance of Solar Energy 01 03 02 04 Solar Power VS other Renewable Energy Better ways of Usage 05 06

5. What is Solar Power? 01

6. WHAT IS SOLAR POWER? It is the ultimate source of energy from millions of years and it is a renewable energy. This energy consists of radiant light and heat energy from the sun. The sun is an inexhaustible and pollution free source of energy.

7. 02 How is Solar Power used?

8. HOW IS SOLAR POWER USED? We can use solar energy by converting it to electrical energy. So we must use a device called solar panels which can convert the light energy into electrical energy. Solar panel is a group of solar cells. Solar cells works on the principle of photoelectric effect .

9. WHAT IS PHOTOELECTRIC EFFECT? When a light of certain frequency falls on the surface of a metal, electrons will absorb the energy. If incident light energy is greater than the work function (minimum energy required to remove the loosely bound valence electrons)of the metal, then the photo electrons will be emitted and the excess energy is converted to the kinetic energy of electron

10. 03 Application of Solar Power

11. Solar car Solar cooker Solar heater Solar lights

12. 04 Importance of Solar Energy

13. IMPORTANCE OF SOLAR ENERGY Solar energy is an important part of almost every life process, if not, all life processes. Plants and animals, alike, use solar energy to produce important nutrients in their cells . Plants use the energy to produce the green chlorophyll that they need to survive, while humans use the sun rays to produce vitamin D in their bodies. However, when man learned to actually convert solar energy into usable energy, it became even more important. Solar energy cells can be used to produce the power for a calculator or a watch. They can also be used to produce enough power to run an entire city. With that kind of versatility, it is a great energy source.

14. 05 Solar Power VS other Renewable Energy

15. SOLAR POWER VS WIND POWER

16. SOLAR POWER VS WIND POWER

17. SOLAR POWER VS HYDROELECTRIC POWER All solar energy is considered green, clean, and renewable, which can’t be said about some forms of hydropower. Meanwhile, in hydroelectric power, excavating the necessary area to create the dam can cause problems for the local ecosystems. Potential problems include: Changing the course of a river Disrupting plant life Bothering local animal populations Displacing people currently living in what would become the new floodplain

18. SOLAR POWER VS TIDAL & WAVE POWER According to European Commission study in 2015, electro-magnetic emissions might disrupt the sensitive marine life unlike in solar power. There’s no avoiding the fact that tidal and wave power holds one of the heaviest up-front price tags. The proposed Swansea Bay Tidal Lagoon project in Wales, UK, is priced at £1.3bn ($1.67bn). In comparison, the Tengger Desert Solar Park cost around $530m for a total installed capacity of 850MW, making it more cost-efficient.

19. SOLAR POWER VS GEOTHERMAL ENERGY Geothermal plants can release hydrogen sulfide, it is a gas that smells like rotten eggs. On the other hand, solar panel installations have no such problems. Geothermal energy uses the earth temperature that is near the surface or that can be used by drilling miles into the earth. While the production of solar power is quite easy. You just need to install solar panels on the land or at your rooftops and generate electricity.

20. SOLAR POWER VS HYDROGEN & FUEL CELL Hydrogen and Fuel Cell are highly flammable which means it is dangerous as a source of electricity. Hydrogen is expensive to produce and not widely available while sunlight as source of energy of solar panels are free.

21. SOLAR POWER VS BIOFUELS The energy conversion efficiency of solar panels may only be less than 30% at most, which is admittedly low, but that is still bigger than the energy conversion efficiency of biomass, which sits at less than 10% on average. So, in terms of efficiency levels, solar is the winner.

22. 06 Better ways of Usage

23. BETTER WAYS OF USAGE Government should take measures and see that solar lights are used as street lights in all the areas. We can place solar panels in the barren lands instead of keeping it away uselessly. We can also keep these solar panels in the deserts, where we can make use of this energy with the help of a rechargeable battery.