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?