Read and download free pdf of CBSE Class 10 Science Sources of Energy Assignment Set C. Get printable school Assignments for Class 10 Science. Class 10 students should practise questions and answers given here for Chapter 14 Sources Of Energy Science in Class 10 which will help them to strengthen their understanding of all important topics. Students should also download free pdf of Printable Worksheets for Class 10 Science prepared as per the latest books and syllabus issued by NCERT, CBSE, KVS and do problems daily to score better marks in tests and examinations
Assignment for Class 10 Science Chapter 14 Sources Of Energy
Class 10 Science students should refer to the following printable assignment in Pdf for Chapter 14 Sources Of Energy in Class 10. This test paper with questions and answers for Class 10 Science will be very useful for exams and help you to score good marks
Chapter 14 Sources Of Energy Class 10 Science Assignment
Very Short Answers
Question : Give two ways in which animal dung can be used as fuel. Which way is better and why?
Answer : As dung cake and as Biogas.. Biogas is better because it spreads less pollution and has more calorific value.
Question : The wind velocity at three places A,B and C are 5Km/hr,15Km/hr,10Km/hr respectively. Which is the most suitable place for installing wind mill & why?
Answer : B, Maximum velocity required is 15km/h. At lower speed it will not work. At very high speed it may break the blades.
Question : What are two advantages of charcoal over wood as fuel?
Answer : High calorific value & pollution free
Question : How difference in temperature helps to harness energy from ocean?
Answer : The difference in temperature helps to obtain energy in ocean- thermal – energy conservation plants, which operate for temperature difference of 20о C or more. The warm surface water is used to boil a volatile liquid . The vapours of the liquid are used to run the turbine of generator , the cold water from the depth of the ocean is pumped up and condense vapour again to liquid.
Question : Mention any two reasons, why wood is not preferred as fuel.
Answer : (i) Burning wood causes pollution
-(ii)Excess use of wood would cause deforestation.
Short Answers
Question : In the given flow chart of energy conversion during hydroelectric power generation,fill in the blanks with appropriate answer
Answer : Dynamo.
Question : Consider two solar cooker, one covered with a plane glass plate and other kept open. Which of the two cooker would be more efficient and why?
Answer : Solar cooker with covered glass slab, as it will show green house effect.
Question : Give one reason how increasing depandance on nuclear power generation is a threat for future generation?
Answer : Radiation emitted during leakage can change the genetic arrangement or disposal to nuclear waste.
Question : Give two ways in which animal dung can be used as fuel. Which way is better and why?
Answer : As dung cake and as Biogas.. Biogas is better because it spreads less pollution and has more calorific value.
Question : The wind velocity at three places A,B and C are 5Km/hr,15Km/hr,10Km/hr respectively. Which is the most suitable place for installing wind mill & why?
Answer : B, Maximum velocity required is 15km/h. At lower speed it will not work. At very high speed it may break the blades.
Question : What are two advantages of charcoal over wood as fuel?
Answer : High calorific value & pollution free
Question : How difference in temperature helps to harness energy from ocean?
Answer : The difference in temperature helps to obtain energy in ocean- thermal – energy conservation plants, which operate for temperature difference of 20о C or more. The warm surface water is used to boil a volatile liquid . The vapours of the liquid are used to run the turbine of generator , the cold water from the depth of the ocean is pumped up and condense vapour again to liquid.
Question : Mention any two reasons, why wood is not preferred as fuel.
Answer : (i) Burning wood causes pollution
-(ii)Excess use of wood would cause deforestation.
Question : Write three reasons why construction of Tehri Dam on river Ganga and Sardar Sarovar project on river Narmada is opposed by local people and environmentalist?
Answer : (i) Rehabilitation problems, loss of agricultural land.
(ii) Disturbance of ecological balance.
(iii) Forming of green house gases due to decomposition of plant in water.
Question : Write three environmental consequences of the various source of energy we used?
Answer : Green house effect, improper use of natural resources, pollution.
Long Answers
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CBSE Class 10 Science Chapter 14 Sources Of Energy Assignment
We hope you liked the above assignment for Chapter 14 Sources Of Energy which has been designed as per the latest syllabus for Class 10 Science released by CBSE. Students of Class 10 should download and practice the above Assignments for Class 10 Science regularly. We have provided all types of questions like MCQs, short answer questions, objective questions and long answer questions in the Class 10 Science practice sheet in Pdf. All questions have been designed for Science by looking into the pattern of problems asked in previous year examinations.
Assignment for Science CBSE Class 10 Chapter 14 Sources Of Energy
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Chapter 14 Sources Of Energy Assignment Science CBSE Class 10
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Chapter 14 Sources Of Energy Assignment CBSE Class 10 Science
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CBSE Science Class 10 Chapter 14 Sources Of Energy Assignment
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