Question: If a short sound is produced inside the container shown in the second picture, compared with the same sound produced in the air outside the container, which of the following changes is most likely to occur in the nature of the sound?
A. The pitch will sound sharper.
B. The pitch will sound lower.
C. The sound will produce a more obvious echo due to reflection from the container walls.
D. The propagation of the sound will be completely blocked.
Clues:
1. The image shows a transparent container made of glass.
2. The container in the second panel is covered by a flat lid, creating an enclosed space.
3. The inner surfaces of the container are smooth.
Answer: B
Category: Chemistry