insulator
Insulators can be thermal or electrical. This topic is part of Materials within Science & Nature. This page currently draws on 6 supporting questions, with answers and bonus facts available below.
insulator trivia questions
An insulator resists the flow of heat or what?
Answer: Electric current
Bonus fact: Insulators can be thermal or electrical.
Which material is commonly used as an electrical insulator?
Answer: Rubber
Bonus fact: Rubber has very few free charge carriers.
Why does trapped air make materials like fiberglass good thermal insulators?
Answer: Air conducts heat poorly
Bonus fact: Small pockets also limit convection.
Why are aerogels excellent thermal insulators?
Answer: Their porous structure greatly limits heat transfer
Bonus fact: Tiny pores suppress conduction and convection.
What concept describes the allowed and forbidden electron energy ranges in a crystal?
Answer: Band structure
Bonus fact: Band structure helps explain why materials behave as conductors, semiconductors, or insulators.
A semiconductor has electrical conductivity between that of a conductor and what?
Answer: Insulator
Bonus fact: Its conductivity can be controlled.