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 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 quieter and will ultimately fade from view.

The clock will slowly become less visible, until you can only hear it.

1 answer

The correct response is:

The appearance of the clock will not change, but its sound will become fainter.

As the air is removed, the sound waves produced by the clock (which are carried by air) will have less medium to travel through, resulting in the sound becoming fainter. The appearance of the clock itself will not change, as it is unaffected by the removal of air.