Why does plastic wrap cling?
Show answer & explanation
Answer: Static charge and molecular forces
Vacuum forms when pressed — Wrong. Pressing does remove air and creates suction on smooth surfaces, but the main clinging comes from static electricity and molecular attraction.
Magnetic attraction to surfaces — Wrong. Plastic and most kitchen surfaces aren't magnetic. Clinging comes from electrostatic forces and weak molecular attractions.
Static charge and molecular forces ✓ — Correct! When you unroll plastic wrap, friction creates static electricity (electrons transfer). This charge attracts it to surfaces. Plus, on smooth surfaces, Van der Waals forces (weak molecular attractions) help it stick. Double physics power!