A strong desire to know about something.

(a)  

Something that is difficult to understand or to explain.

(a)  

A form of energy from charged particles, usually supplied as electric current through cables, wires, etc. for lighting, heating, driving machines, etc.

(a)  

A situation in which two or more things are not the same size or are not treated the same, in a way that is unfair or causes problems.

(a)  

The outside edge.

(a)  

A machine that is designed to do a particular thing in the home.

(a)  

A device that is placed inside a car engine, clock, radio, etc. and that produces the electricity that makes it work.

(a)  

A substance that allows electricity or heat to pass along it or through it.

(a)  

A material or device used to prevent heat, electricity, or sound from escaping from something.

(a)