Scientific Investigation: Static Electricity Spinning Paper Experiment 1. Introduction and Objective
Rub the plastic ruler or comb vigorously against the woolen item for 15–20 seconds. This creates a net negative charge. Download Static Activity
When the plastic ruler is rubbed against the wool, electrons are transferred from the wool to the plastic, causing the ruler to become negatively charged (static charge). When this negatively charged object is brought near the electrically neutral paper, it repels the electrons on the surface of the paper, creating a positive charge on the side closest to the ruler. This phenomenon is known as . The electrostatic attraction between the negative ruler and the positive side of the paper creates a force sufficient to make the paper spin. 5. Extension Activities and Variations When the plastic ruler is rubbed against the
Balance the center point of the paper on the tip of the pencil. The electrostatic attraction between the negative ruler and
Bring the charged ruler near one edge of the paper (but do not touch it). The paper will begin to spin towards the ruler. 4. Scientific Explanation (Why it works)