Which word is used to describe a flow of electrons through a conductor? a discharge
a spark
an electron flow
a current

an electron flow !

Explanation:

an electron flow is the flow of electrons in a conductor. The force required to make current flow through a conductor is called voltage and potential is the other term of voltage.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

c (diamond),

sio2 (quartz)