Julia hears crackles and sees sparks as she takes off her wool sweater. What science phenomenon is Julia observing and how does it occur in this situation? • A. Static electricity was caused by her sweater rubbing against her shirt and transferring electrons. • B. Static electricity was caused by Julia having a static charge and then touching something metal. • C. Electron shock was caused by Julia's sweater rubbing on her hair and gaining electrons as she removed it. • D. Electron shock was caused by Julia scuffing across carpet in stocking feet and then touching her neutrally charged sweater.

(C) Electron shock was caused by Julia's sweater rubbing on her hair and gaining electrons as she removed it.

Explanation:

When two bodies are rubbed against each other, there is a transfer of electrons from one body to the other. This will cause one body to lose electrons and be positively charged and the other body will gain electrons and be negatively charged. During this rubbing process the positive charges (protons) on the positively charged body will begin to interact with the (electrons) on the negatively charged body. This process might cause a spark sounding like that of a crackling air.

Therefore, in the case of Julia, as she takes off her wool sweater, there is a rub between the sweater and her hair. The charges (protons and electrons) in her wool sweater begin to interact with the charges (protons and electrons) in her hair causing a spark.

This concept is called static electricity in physics. Static electricity is an interaction between positive and negative charges of bodies.

Explanation:A because the static discharge tells you it would be static electricity