I am a new student, my teacher asked us what is electricity on our first day. Any ideas ,how I should answer this question?

 

Electricity is the flow of particles (electrons) from negatively charged objects to positively charged objects. That is static electricity. Non-static electricity (whatever it's called, can't remember) is the flow of free electrons.

 

Give our Ebook a read - http://www.allaboutcircuits.com/vol_1/chpt_1/1.html

 

You could memorize or read this as an answer, until the teacher starts sweating, and peeing, and the eyes tearfully rolling into blank...
It will be a long good answer.

----> http://amasci.com/miscon/whatis.html

(There is several pages)