@museumofscience: Can you hold a cup of water upside down without spilling?💧🥤 Museum Educator Jeannine demonstrates how it works: by filling the glass to the very top, there's almost no air left inside. The air pressure in the room pushes up on the card with more force than gravity pulls the water down — and the water creates a seal against the card, keeping the air out.   #Physics #AmazingFacts #ScienceExperiment #LearnOnTikTok #ScienceFacts