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LESSON PLAN Subject: Science Class: X Time: 35 min Presented by

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1 LESSON PLAN Subject: Science Class: X Time: 35 min Presented by
Topic: Sources of Energy Sub-topic: Renewable sources of Energy Class: X Time: 35 min Presented by AJAY ACHARYA Dr. R.P. Guleria: Lecture in Physics, GSSS Bhuntar, Kullu Mr. Ajay Acharya Lecture in Physics, GSSS Mandal, Kangra Mr. Raj Pal: Lecture in Chemistry, GBSSS Kullu Mr. Janaki Dass: Lecturer in Science, DIET Kullu

2 Specific Objectives To understand the concept of energy
Students will be able to identify at least five sources of energy Students will be able to explain why an increased dependence on renewable energy sources is an inevitable part of our future. The student will be able to understand that Sun is the ultimate source of energy.

3 Previous Knowledge Testing
What is Energy? Why do we need energy? From where we get energy

4 Motivation Cooking process in the kitchen Drying cloths out side

5 Announcement of the Topic
Dear students today’s we will discuss about the sources of energy

6 Sources of Energy Sources of Energy Renewable Sources of Energy
Non-renewable Sources of Energy

7 Renewable Sources of Energy
Sources which can be used over & over again are renewable sources of energy. Few of them are: Solar Energy Biomass Energy Water Energy Geothermal Energy Wind Energy

8 Solar Energy India receives solar energy equivalent to over 5000 trillion kWh/year, which is far more than the total energy consumption of the country. Solar energy is the most readily available source of energy. It does not belong to anybody and is, therefore, free. Solar Panel Solar water heater Solar Cooker It is also the most important of the non-conventional sources of energy because it is non-polluting and, therefore, helps in reducing the greenhouse effect. Solar energy can be converted into electrical energy by using solar panels, or alternatively, be used as thermal energy using solar water heaters, solar cookers etc.

9 Wind Energy India ranks 5th in the world with a total wind power capacity if 1080MW out of which 1025Mw have been established in commercial projects. India is world’s third largest producer of electricity using wind mills. Wind energy is the kinetic energy associated with the movement of atmospheric air. It has been used for hundreds of years for sailing, grinding grain, and for irrigation.

10 Hydro Energy Using dams, water is allowed to pass through turbine blades, which produces electricity. In India, after coal, most of the energy is produced by this method.

11 Geothermal energy: It is the energy which is obtained from the interior of the earth. In this method water is sent to the interior parts of the earth where it evaporates and comes out with great force and pressure in the form of steam which turns the turbines and in the end produces electricity.

12 Bio-gas energy: Plants use photosynthesis to grow and produce biomass. Also known as bio matter, biomass can be used directly as fuel or to produce liquid bio fuel. Typically bio fuel is burned to release its stored chemical energy. Research into more efficient methods of converting bio fuels and other fuels into electricity utilizing fuel cells is an area of very active work.

13 Found in ABUNDANCE Can be RENEWED again and again Pollution Free
Why RENEWABLE? Found in ABUNDANCE Can be RENEWED again and again Pollution Free & Eco- Friendly

14 Non-renewable Sources of Energy
Resources of energy present in a limitation on the surface of the earth is called non-renewable resources. The resources which once get exhausted, can not be Nonrenewable energy sources come out of the ground as  liquids, gases and solids. Coal, petroleum, natural gas, and propane are all considered fossil fuels because they formed from the buried remains of plants and animals that lived millions of years ago. These energy sources are considered nonrenewable because they can not be replenished (made again) in a short period of time.  Examples: Coal Petroleum Natural Gases( LPG,CNG) Nuclear energy

15 Recapitulation What do you understand by the concept of energy
Discuss at least five sources of energy Name any three renewable sources of energy According to you which is the ultimate source of energy and why?

16 Evaluation/Group Activity

17 Evaluation/Group Activity
Conservation of Energy 1. In your own words, write the definition of energy conservation. 2. List 5 ways to conserve energy in the home. 3. List 1 way that we could conserve energy in our school.

18 Evaluation/Group Activity
Energy Sources Wind chemical Sun nuclear water coal The light that comes to earth from the …………………….. is pure energy. One of the three fossil fuels, …………………… burned to heat at homes and run electrical machinery. ……………………..that blows can be used to turn windmills, which generate electricity. ……………………..falling downhill is used to run turbines, which generate electricity. This is called hydroelectric power. Batteries create energy through …………………….. reactions. power produces far more power per ton than any other energy source. It does not contribute to air pollution. The drawback to this power is finding a safe place to dispose of the waste

19 Home Assignment List the different energy sources which is being used in your home/locality Draw a labeled diagram of solar cooker on a chart Make a working model of wind mill

20 Which one is better? Thanks

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