Practice: Conductors & Insulators 1) Gold is a good conductor and is used as a coating on cables on audio-visual equipment. Suggest reasons why gold is not used in more electric applications like home wiring and transmission wires. 2) Using your existing knowledge and trends you have discovered, categorize the following as good conductors, fair conductors or insulators. glass tin Earth human body rubber aluminum lemon juice copper fur silicon pure water salt water gold titanium ceramic Conductors Semiconductors (fair) Insulators 3) Explain, which reference to this lesson, why tools used by electricians have a thick plastic or rubber handle. What does the handle prevent? 4) Why is holding a conductor during a thunderstorm a bad idea