Science - Physics - Soundloudspeakerleft.jpg

Gap-Filling Quiz

Type the answers (or copy and paste them) into the blank boxes.
You may press the Hint button to get the next letter. However, you will lose marks each time that you receive a hint.
When you have selected all of your answers, click on the "Check" button.
Good luck!
   deafness      detect      ear      eardrum      echo      loud      medium      noisy      speed      Ultrasound      vibrations   
Sound is a form of energy caused by .
Sound needs a in which to travel. The of sound depends upon the medium through which it travels.
Sound can be reflected off surfaces by means of an .
is a high pitched sound beyond the detection of the human .
Humans sound in the inner ear after it causes the to vibrate.
Very sounds can cause . Ear protection should be worn in places.