Science - Sound
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How is sound made?
Does sound travel through a vacuum (empty space)?
Which travels faster, light or sound?
What is an echo?
This is when sound reflects off a surface
State an advantage of an echo
Echo sounding to find out the dpeth of a sea
State a disadvantage of an echo
It is a nuisance in large halls, cinemas and theatres
What is the unit used to measure sound?
List ways in which a person can reduce sound levels in their house
Use carpets and curtains in a house
Use double glazing windows
State two differences between light and sound
Light travels through a vacuum (empty space) but sound does not
Light travels faster than sound
What would you like to do?
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