If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Pressure and displacement of sound waves in tubes


A standing sound wave is created in a closed tube. The displacement diagram for the air molecules of the standing wave is shown below.
Which of the labeled points is a pressure antinode?
Choose 1 answer: