Q1. On page 31, there is an experiment using a lemon. How does the lemon act as a battery?

Q2. What do you think about solar energy? List the good things and(or) bad things, then state your opinion.

To be answered by 9/1 after reading chap1.3(28~39p)

--------------------------------------------------------------------

Answers

A1. The lemon acts as a electrolyte. It contains free ions in the juice, so it is a good enough electrolyte.

A2. Solar energy is comparatively safe and environmental. Unlike fire based energy, it doesn't create air pollution. It is not dangerous like radioactive energy. Yet, it has a picky energy source. The Sun doesn't want to come out in the night and even in the day, it has a tendency to hide behind clouds. So, although I'm for using solar energy, I wouldn't make solar cell based energy the only way to get energy