This document discusses natural phenomena like lightning, earthquakes, and charging by friction. It then covers the following topics: - The two types of electric charges (positive and negative) and how like charges repel and unlike charges attract. - How to make a simple electroscope and use it to test electric charge. - How charge can be transferred through contact or discharge. - What lightning is and how lightning conductors protect buildings. - Causes of earthquakes and some safety precautions during earthquakes.