Sounds' - PowerPoint PPT Presentation

1 / 6
About This Presentation
Title:

Sounds'

Description:

SPEED OF SOUND. In air about 330m per second. Exact speeds depend on temperature. ... It is much slower than the speed of light. THANK YOU. ... – PowerPoint PPT presentation

Number of Views:39
Avg rating:3.0/5.0
Slides: 7
Provided by: Y861
Category:
Tags: of | sound | sounds | speed

less

Transcript and Presenter's Notes

Title: Sounds'


1
Sounds.
  • Rebecca Suddaby,
  • Y5 Class 6PH,
  • Stanford School Laceby.

2
MAKING SOUNDS.
  • When the cone of a loudspeaker vibrates it
  • stretches and squashes
  • the air in front of it.
  • These travel outward through the air as invisible
    waves. When waves enter your ear you hear them as
    sound.

3
Sound needs a material to travel through.
  • Sound waves can travel through solids and liquids
    as well as gases.
  • They cannot travel through a vacuum(empty space).
  • If there is nothing to stretch and squash, sound
    waves cannot be made.

4
SOUND IS CAUSED BY VIBRATIONS.
  • Vibrations can be produced in different ways
    .e.g. guitar string being plucked, recorder being
    blown, bell being rung.

5
SPEED OF SOUND.
  • In air about 330m per second.
  • Exact speeds depend on temperature.
  • Sound travels faster through water than air and
    even faster through most solids.
  • It is much slower than the speed of light.

6
THANK YOU.
  • Thank you for listening and watching my
    PowerPoint presentation on sound!
Write a Comment
User Comments (0)
About PowerShow.com