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 point)
Responses
The clock will slowly become less visible, until you can only hear it.
The clock will slowly become less visible, until you can only hear it.
The appearance of the clock will not change, but its sound will become fainter.
The appearance of the clock will not change, but its sound will become fainter.
The appearance of the clock and the sound of the clock will not change.
The appearance of the clock and the sound of the clock will not change.
The clock will slowly become quieter and will ultimately fade from view.
The clock will slowly become less visible, until you can only hear it.
The correct answer is:
The appearance of the clock will not change, but its sound will become fainter.
Explanation:
When the air is slowly removed from the space around the ringing alarm clock, the change in air pressure will affect the transmission of sound waves. Sound waves require a medium, such as air, to travel through. As the air is removed, the sound waves will have fewer air molecules to interact with, resulting in a gradual decrease in sound intensity. However, since the clock is still visible and not directly affected by the removal of the air, its appearance will remain unchanged.