Junior Cert Science - Physics - Soundloudspeakerleft.jpg

Gap-filling exercise

  
Fill in all the gaps, then press "Check" to check your answers.
You have eight minutes to complete this exercise. Good luck!
Sound is a form of energy caused by .
Sound needs a 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.