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Ch-14 Page No 243 Question 1: What is a good source of energy?
Ch-14 Question 2: What is a good fuel?
Ch-14 Question 3: If you could use any source of energy for heating your food, which one would you use and why?
Ch-14 Page No 248: Question 1: What are the disadvantages of fossil fuels?
Ch-14 Question 2: Why are we looking at alternate sources of energy?
Ch-14 Question 3: How has the traditional use of wind and water energy been modified for our convenience?
Ch-14 Page No 253: Question 1: What kind of mirror − concave, convex or plain − would be best suited for use in a solar cooker? Why?
Ch-14 Question 1: Can any source of energy be pollution-free? Why or why not?
Ch-14 Question 2: What are the limitations of the energy that can be obtained from the oceans?
Ch-14 Question 2: Hydrogen has been used as a rocket fuel. Would you consider it a cleaner fuel than CNG? Why or why not?
Ch-14 Question 3: What is geothermal energy?
Ch-14 Question 4: What are the advantages of nuclear energy?
Ch-14 Page No 254: Question 1: Name two energy sources that you would consider to be renewable. Give reasons for your choices.
Ch-14 Question 2: Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.
Ch-14 Question 1: A solar water heater cannot be used to get hot water on(a) a sunny day (b) a cloudy day
Ch-14 Page No 255: Question 2: Which of the following is not an example of a bio-mass energy source? (a) wood
Ch-14 Question 3: Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun’s energy? (a) Geothermal energy
Ch-14 Question 4: Compare and contrast fossil fuels and the Sun as direct sources of energy.
Ch-14 Question 5: Compare and contrast bio-mass and hydro electricity as sources of energy.
Ch-14 Question 6: What are the limitations of extracting energy from −(a) the wind?
Ch-14 Question 7: On what basis would you classify energy sources as (a) renewable and non-renewable?
Ch-14 Question 8: What are the qualities of an ideal source of energy?
Ch-14 Question 9: What are the advantages and disadvantages of using a solar cooker? Are there places where solar cookers would have limited utility?
Ch-14 Question 10: What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?
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