Which materials are typically used as thermal insulators

These are :

1.Fiber glass. It is made up of finely woven silicon and glass powder and is able to minimize heat transfer.

2. Mineral wool. This may refer to glass wool which is really fiberglass manufactured from recycled glass, or rock wool which is made from basalt,

3.Cellulose. This is made from recycled cardboard and is one of the most eco-friendly forms of insulation.

4. Polyurethane foam: While not the most abundant of insulation, polyurethane foams are an excellent form of insulation. 

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation: