Mini-Quiz: Detecting Sound Waves

1. How does sound cause things to vibrate?

   The mechanical motion of the sound waves is transferred from one material to the otherThat is correct. You are becoming a Champion in writing and e-learning. The sound circles around the object until it shakesGood try, but not right. Select another answer. Sound can only make air vibrateSorry, not correct. Try another button.

2. What is the purpose of processing the signal created by a detector from a sound wave?

   To make the signal usefulCorrect. You must be a genius! To demonstrate it can be doneOops! Wrong answer. Re-read the question and try again. The sound is processed, not the signalSorry, not correct. Try another button.

3. Why would you cup your ears with your hands when trying to hear faint sounds?

   To focus more sound waves into your earsThat is correct. You are becoming a Champion in writing and e-learning. To make your hands vibrateOops! Wrong answer. Re-read the question and try again. It is a gesture to make people talk louderGood try, but not right. Select another answer.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.