question: Electricity consists of a constant stream of what tiny particles?
distractor3: ions
distractor1: atoms
distractor2: quarks
correct_answer: electrons
support: You probably know that the wires strung between these high towers carry electricity. But do you know what electricity is? It actually consists of a constant stream of tiny particles called electrons. Electrons are negatively charged fundamental particles inside atoms. Atoms were discovered around 1800, but almost 100 years went by before electrons were discovered.