1. A solar water heater cannot be used to get hot water on
a) a cloudy day,
b) a hot day.
c) on any day
d) a windy day
2. Which of the following is not an example of a bio-mass energy source?
a. Wood
b.gobar-gas
c. nuclear energy
d. coal
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
b. wind energy
c. nuclear energy
d. bio-mass.
