Here are the learning objectives for this topic:
o Use the words high, low, loud and soft to describe sounds
o Label a diagram of sound waves
o Label the a diagram human ear
o Give examples of sounds and their loudness in decibels
o That sound is caused by vibrations
o Why sound travels through solids, liquids and gases but not through a vacuum
o That sound waves can be shown using an oscilloscope
o How amplitude changes with volume
o How wavelength/frequency changes with pitch
o How the ear lets us hear sounds
o That loudness of sound is measured in decibels
o That frequency is measured in Hertz
useful 8L websites
Revise sound on Bitesize.
Try a Bitesize Sound quiz.
Here is Doc Brown´s 8L Quiz.
An interactive ear diagram from innerbody.com.
Learn a little bit more about how hearing loss can be treated from the FDA website.