What part of the electromagnetic spectrum has rays that penetrate more deeply and produce more heat than visible light?

Rubber, silk, wood, and glass are common examples of ___.

What is the movement of electrons from one atom to another along a conductor?

The use of electrical currents to treat the skin is commonly referred to as ___.

What unit measures the strength of an electric current?

The path of an electric current from the generating source through the conductors and back to the original source is a(n) ___ electric circuit.

What unit measures the resistance of an electric current?

What general term refers to a color component within the skin such as blood or melanin?

The unit that measures the pressure or force that pushes the flow of electrons forward through a conductor is a(n) ___.

What term refers to the distance between two successive peaks of electromagnetic waves?

Which material is a good conductor of electricity?

All the electrical appliances you use should be ___ certified.

What is a type of cold light that is blocked by the ozone layer?