A ringing alarm clock is put under a glass jar. The air is slowly removed from the space around it. What will happen as the air is removed?
1 answer
As the air is removed, the sound of the alarm clock will become quieter and quieter until it can no longer be heard. This is because sound waves need air molecules to travel through in order to be heard. Without air molecules, the sound waves cannot travel and the sound of the alarm clock will be muffled.