Second term weekly test revision questions
Q1.a) what do you mean by degradation of energy?
b) why a person should use bio- char stoves for cooking?
Q2.a) write two policy measures to check global warming.
b) How green house gases and global warming are related to each other.
Q3.a) what percentage of total electrical power generated in India is obtained from nuclear power plants? Name two places in India where electricity is generated from nuclear power plants.
b) write three disadvantage of using solar panels?
Q4.a) Describe an experiment to show that water has maximum density at 4 degree Celsius. What important consequences follow from this Peculiar property of water? Discuss the importance of this phenomena in nature.
b) what do you mean by energy flow in ecosystem in form of a food chain. Explain it With the help of a suitable diagram.
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