Science - Sound

Card Set Information

Author:
mshowley
ID:
146111
Filename:
Science - Sound
Updated:
2012-04-24 07:48:06
Tags:
Sound
Folders:

Description:
Sound
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  1. How is sound made?
    By vibrations
  2. Does sound travel through a vacuum (empty space)?
    No
  3. Which travels faster, light or sound?
    Light
  4. What is an echo?
    This is when sound reflects off a surface
  5. State an advantage of an echo
    Echo sounding to find out the dpeth of a sea
  6. State a disadvantage of an echo
    It is a nuisance in large halls, cinemas and theatres
  7. What is the unit used to measure sound?
    Decibels
  8. List ways in which a person can reduce sound levels in their house
    Use carpets and curtains in a house

    Use double glazing windows
  9. State two differences between light and sound
    Light travels through a vacuum (empty space) but sound does not

    Light travels faster than sound

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