PPT-ENERGY-SOURCE sggvstsbtbtsbbahS.pptx

3 types of rocks

1. 1. Describe how energy is harnessed from different sources: (a) solar energy (b) nuclear energy (c) geothermal, (d) hydrothermal, (e) wind energy. 2. Identify the advantages and disadvantages of each energy sources 3. Express awareness on the conservation of our energy sources 4. Create a model unit of particular energy source.

2. Energy is defined as the ability to do work. When work is done, energy is transferred from one object to another. Energy exists from different forms such as electrical and chemical energy. Most forms of energy can be classified as kinetic energy and potential energy. Kinetic energy is the energy of moving matter. Things with kinetic energy can do work. Kinetic energy depends on the object’s mass and velocity. Potential energy is the energy stored in an object because of its position or shape. How is Energy Produced and Managed

3. The two major sources of energy is classified as: Conventional Sources and Non-Conventional Sources

4. Difference Between Conventional and Non-conventional Sources of Energy

5. Difference between Renewable and Non-renewable Resources Electrical sources can be broken down to two major groups: renewable and nonrenewable sources. Renewable source is produced from sources that do not deplete or can be replenished within a human's life time. The most common examples include wind, solar, geothermal, biomass, and hydropower. This is in contrast to non-renewable source which is a natural resource that cannot be readily replaced by natural means at a quick enough pace to keep up with consumption.

6. I. Renewable Sources Geothermal energy is produced by the heat of Earth's molten interior. This energy is harnessed to generate electricity when water is injected deep underground and returns as steam (or hot water, which is later converted to steam) to drive a turbine on an electric power generator that produces electricity. Geothermal energy is less of an environmental hazard compared to fossil fuels though it still has some emissions of carbon dioxide, nitrous oxide, and sulfur dioxide.

7. Geothermal power utilizes the heat energy from the earth’s crust. This heat energy heats up rocks which, in turn, heats up nearby groundwater. The Malitbog Geothermal Power Station is a 232.5 MW geothermal power plant or an earth steam turbined electric generator--the world's largest geothermal power plant under one roof located in Malitbog, Kananga, Leyte, Philippines. The power plant is one of four operating in the Leyte Geothermal Production Field.

8. 2. Hydroelectric Hydroelectric power (hydropower) is derived from the energy of falling or moving water to generate electricity . Hydropower is a proven, mature, predictable, and price competitive technology. A number of on- and off-grid hydropower plants have been built throughout the country, including impounding dams and run-of-river types. Impounding dams are able to supply energy during peak and off-peak hours while run-of-river types supply electricity whenever capable, depending on the volume of water that is discharged from the watersheds.

9. A turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy. The generator power is stepped up to a higher voltage from the substation, and then exported for transmission.

10. Some of the operational hydroelectric power plants in the Philippines are: Palakpakin Hydroelectric Power Plant in San Pablo, Laguna Balugbog Hydroelectric Power Plant in Narcarlan, Laguna Cantingas Hydroelectric Power Plant in San Fernando, Romblon The Kalayaan hydro power project located in Calabarzon, the Philippines.

11. 3. Wind power While an electric fan uses electricity to produce wind, a wind turbine uses wind to produce electricity. A wind turbine can generate megawatts of power, depending on the weather conditions. In fact, an indicator for a potential wind farm site is the presence of flagging trees or trees that are bent like how a flag would look like due to strong winds. Because of the vast land area a wind farm occupies, unused areas can be co-located with agricultural crops or even a solar farm.

12. Wind turbines work on a simple principle: instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity.

13. Some of the most recent developments are the Bangui Wind Farm, Burgos Wind Farm, and Caparispisan Wind Farm in Ilocos Norte, the Wind Energy Power System in Oriental Mindoro, San Lorenzo Wind Farm in Guimaras, Nabas Wind Farm in Aklan and Pililla Wind Farm in Rizal. Nabas Wind Farm in Aklan

14. 4. Solar Cells If plants photosynthesize using sunlight, electric-powered technologies can also use sunlight for energy. Solar power is a variable energy source that is dependent on the cycle of the sun. The Philippines, being situated near the equator, has many potential sites where solar energy may be harnessed.

15. A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon. It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Individual solar cell devices are often the electrical building blocks of photovoltaic modules, known colloquially as solar panels.

16. Some of the operational solar power plants in the Philippines are: • Lian Sola Power Project and Calatagan Solar Power Project in Calatagan, Batangas • Cavite Economic Zone Solar Power Project in Rosario and General Trias, Cavite • CW Home Depot Solar Power Project and Central Mall Binan Solar Power Plant in Biñan City, Laguna

17. Lian Sola Power Project and Calatagan Solar Power Project in Calatagan, Batangas

18. Is nuclear energy sustainable and clean? Nuclear energy is usually considered another nonrenewable energy source. Although nuclear energy itself is a renewable energy source, the material used in nuclear power plants is not. Nuclear energy harvests the powerful energy in the nucleus, or core, of an atom.

19. Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Presently, the vast majority of electricity from nuclear power is produced by nuclear fission of uranium and plutonium in nuclear power plants

20. How it works Nuclear energy originates from the splitting of uranium atoms – a process called fission. This generates heat to produce steam, which is used by a turbine generator to generate electricity. Because nuclear power plants do not burn fuel, they do not produce greenhouse gas emissions.

21. What are the two sources of energy?

22. How will you differentiate conventional to non-conventional sources of energy?

23. What are examples the renewable and non-renewable sources?

24. If nonrenewable resources are resources that cannot be re-made at a scale comparable to its consumption, what are renewable resources?

25. How will you differentiate the renewable to non-renewable sources of energy?

26. How energy is harnessed in different sources of energy?

27. Takehome Task 1.Fossil fuels will face a shortage of supply in the next 50 years. How can this affect the industries that depend on fossil fuels? How can we respond to this crisis? 2.How would a community be affected by a geothermal resource, such as a hot spring near them? 3. Hydroelectric power plants are distributed in different locations in the Philippines. The majority of these power plants are situated in the mountainous regions of Benguet and in areas of Mindanao. What do you think are the features of these regions that make them good locations for hydroelectric power plants?