current in the circuit beyond a specified limit. Overloading occurs due to an accidental rise in the supply voltage. Sometimes overloading is caused by connecting too many appliances of high power rating to a single socket. At the end students were happy as they got lot of information on power use. What causes circuit? What do you mean by the term ‘Overloading’? What values do the students learn from the Documentary? A.1) Short circuiting occurs when the live wire and the neutral wire come into direct contact. 2) Overloading means flow of current in the circuit beyond a specified limit. 3)Concern for safety /Scientific temperament CHAPTER 14- SOURCES OF ENERGY 1. Our energy requirements increase with our standard of living. 2. Characteristics of good source of energy. High efficiency/easy to use/easy to store and transport/ economical/easily accessible. 4.Fossil fuels are nonrenewable/exhaustible/causes air pollution, acid rain and global warming. 5.Biogas is formed by the decomposition of cow dung, agricultural and domestic wastes. Composition of biogas Methane Hydrogen sulphide Hydrogen Carbondioxide Advantages of bio gas : Pollution free/Wealth from wastes/No residue/high efficiency. 6.Wind energy : Kinetic energy of the wind is used to do the useful work . Advantages: Renewable/inexhaustible/pollution free/no residue. Disadvantages :-High cost of installation/minimum wind speed 15km/h/ maintenance cost high/requirement of large area of land. cells are devices which convert light energy into electric energy. Advantages :-inexhaustible/pollution free/used in artificial satellites/can be used in remote areas/ low cost of maintenance. Disadvantages:-Requirement of special of silicon/high cost of installation/moderate efficiency.
current in the circuit beyond a specified limit. Overloading occurs due to an accidental rise in the supply voltage. Sometimes overloading is caused by connecting too many appliances of high power rating to a single socket. At the end students were happy as they got lot of information on power use. What causes circuit? What do you mean by the term ‘Overloading’? What values do the students learn from the Documentary? A.1) Short circuiting occurs when the live wire and the neutral wire come into direct contact. 2) Overloading means flow of current in the circuit beyond a specified limit. 3)Concern for safety /Scientific temperament CHAPTER 14- SOURCES OF ENERGY 1. Our energy requirements increase with our standard of living. 2. Characteristics of good source of energy. High efficiency/easy to use/easy to store and transport/ economical/easily accessible. 4.Fossil fuels are nonrenewable/exhaustible/causes air pollution, acid rain and global warming. 5.Biogas is formed by the decomposition of cow dung, agricultural and domestic wastes. Composition of biogas Methane Hydrogen sulphide Hydrogen Carbondioxide Advantages of bio gas : Pollution free/Wealth from wastes/No residue/high efficiency. 6.Wind energy : Kinetic energy of the wind is used to do the useful work . Advantages: Renewable/inexhaustible/pollution free/no residue. Disadvantages :-High cost of installation/minimum wind speed 15km/h/ maintenance cost high/requirement of large area of land. cells are devices which convert light energy into electric energy. Advantages :-inexhaustible/pollution free/used in artificial satellites/can be used in remote areas/ low cost of maintenance. Disadvantages:-Requirement of special of silicon/high cost of installation/moderate efficiency.
SSM%20Science%20X.docx