Here's why:
* Electrical Insulation: Rubber is an excellent electrical insulator. It resists the flow of electricity, preventing it from passing through easily. This is why you'll find rubber used in electrical cords, gloves for electricians, and other applications where preventing electric shock is crucial.
* Thermal Insulation: Rubber also acts as a good thermal insulator, meaning it resists the flow of heat. This is why rubber is often used in items like oven mitts, hot water bottles, and even certain types of clothing for warmth.
Other good examples of insulators include:
* Glass: Used in windows, light bulbs, and other applications where preventing heat loss is important.
* Plastic: Found in everything from electrical plugs to food containers, plastic is a versatile and effective insulator.
* Wood: Traditionally used for building homes and furniture, wood is a natural insulator that helps keep homes warm in the winter and cool in the summer.
* Air: While not a solid material, air is an excellent insulator. This is why double-paned windows and other insulation methods often rely on trapping air to prevent heat transfer.
It's important to remember that there are different levels of insulating properties, and some materials might be better insulators than others in specific applications.