Sources of energy Worksheet-1
A. a sunny day B. a cloudy day
C. a hot day D. a windy day
A. wood B. gobar gas
C. atomic energy D. coal
A. goethermal energy B. wind energy
C. fossil fuels D. bio-mass.
A. Wind energy B. Tidal energy
C. Nuclear energy D. Wave energy.
A. Ocean energy B. Hydrogen as a fuel
C. Biomass energy D. Fossil fuels
A. 400 years B. 500 years C. 1000 years D. 250 years
A. 50 years B. 60 years C. 15 years D. 100 years.
A. 1% B. 0.001%
C. 0.00000005% D. 0.0005%
A. 1.4 kj/min B. 1.4 Wh/min
C. 1.4 kW/m2 D. 1.4 kW/min
A. 5% B. 1% C. 10% D. 0.1%
Answer Key:
Explanation: On a cloudy day, heat radiation which com from the Sun do not reach the solar water heater so we can’t get hot water from solar water heater.