Revision Sound by Sheerin https://padlet.com/SHEERIN/rev15B en-us 2016-02-22 08:21:31 UTC 2023-02-17 11:02:30 UTC hello@padlet.com 1. How do our ears help us to hear? SHEERIN https://padlet.com/SHEERIN/rev15B/wish/96348834 2016-02-22 08:23:57 UTC https://padlet.com/SHEERIN/rev15B/wish/96348834 2. What is Sound SHEERIN https://padlet.com/SHEERIN/rev15B/wish/96348931 2016-02-22 08:24:43 UTC https://padlet.com/SHEERIN/rev15B/wish/96348931 3. Name the source and medium. What has caused the sound? SHEERIN https://padlet.com/SHEERIN/rev15B/wish/96348953 2016-02-22 08:24:49 UTC https://padlet.com/SHEERIN/rev15B/wish/96348953 4. I can hear the sound of the coming train, if i put my head on the railway track. SHEERIN https://padlet.com/SHEERIN/rev15B/wish/96349045 2016-02-22 08:25:35 UTC https://padlet.com/SHEERIN/rev15B/wish/96349045 5. List the properties of Sound. SHEERIN https://padlet.com/SHEERIN/rev15B/wish/96349178 2016-02-22 08:26:22 UTC https://padlet.com/SHEERIN/rev15B/wish/96349178 6. Dolphins can communicate in oceans, Explain. SHEERIN https://padlet.com/SHEERIN/rev15B/wish/96349210 2016-02-22 08:26:35 UTC https://padlet.com/SHEERIN/rev15B/wish/96349210 7. Why do we hear echoes  when we shout in the middle of a valley? SHEERIN https://padlet.com/SHEERIN/rev15B/wish/96915482 2016-02-24 06:49:22 UTC https://padlet.com/SHEERIN/rev15B/wish/96915482 Group 7 https://padlet.com/SHEERIN/rev15B/wish/96917591 We do because sound can bounce off things and reflect back to us.Hence we can hear echoes as a valley is surrounded with mountain ]]> 2016-02-24 07:19:46 UTC https://padlet.com/SHEERIN/rev15B/wish/96917591 Ans https://padlet.com/SHEERIN/rev15B/wish/96917602 1-Sound can be absorbed
2-Sound can be reflected
3-Sound is caused due to vibration

4-Sound can be modified (eg- pitch and modulations)
5-Sound travels in waves
6-Sound needs a medium to travel]]> 2016-02-24 07:19:54 UTC https://padlet.com/SHEERIN/rev15B/wish/96917602 Ans 6 https://padlet.com/SHEERIN/rev15B/wish/96917615
They can communicate in oceans because sound can travel through liquids.]]> 2016-02-24 07:20:06 UTC https://padlet.com/SHEERIN/rev15B/wish/96917615 Group 2 https://padlet.com/SHEERIN/rev15B/wish/96917660 Sound is a longitudinal wave and is created when an object vibrates.

]]> 2016-02-24 07:20:36 UTC https://padlet.com/SHEERIN/rev15B/wish/96917660 Group 3 https://padlet.com/SHEERIN/rev15B/wish/96917725 The source are the strings and the medium is gas and the vibrations is causing the sound.]]> 2016-02-24 07:21:29 UTC https://padlet.com/SHEERIN/rev15B/wish/96917725 Challenge groups https://padlet.com/SHEERIN/rev15B/wish/96917989 2016-02-24 07:24:40 UTC https://padlet.com/SHEERIN/rev15B/wish/96917989 Challenge group  https://padlet.com/SHEERIN/rev15B/wish/96918055 Which part of the ear vibrates first?

]]> 2016-02-24 07:25:21 UTC https://padlet.com/SHEERIN/rev15B/wish/96918055 Group 4 https://padlet.com/SHEERIN/rev15B/wish/96918073 Sound can travel through solids and the railway track is a solid .
Sound travels faster in solids than in gas hence we can hear sound by placing our ears on the railway track much before we can see it coming]]> 2016-02-24 07:25:35 UTC https://padlet.com/SHEERIN/rev15B/wish/96918073 Simar Tarun Manan https://padlet.com/SHEERIN/rev15B/wish/96918314 In our ear which part sends messages to our brain]]> 2016-02-24 07:27:56 UTC https://padlet.com/SHEERIN/rev15B/wish/96918314 Ans to challenge https://padlet.com/SHEERIN/rev15B/wish/96918390 Stirrup and anvil and hammer]]> 2016-02-24 07:28:37 UTC https://padlet.com/SHEERIN/rev15B/wish/96918390 Simar Manan Tarun https://padlet.com/SHEERIN/rev15B/wish/96919020 Ear drum]]> 2016-02-24 07:34:19 UTC https://padlet.com/SHEERIN/rev15B/wish/96919020 Group 6 https://padlet.com/SHEERIN/rev15B/wish/96920460 Why can u hear someone who is in other room]]> 2016-02-24 07:44:23 UTC https://padlet.com/SHEERIN/rev15B/wish/96920460 Ans of 6 https://padlet.com/SHEERIN/rev15B/wish/96922949 You can hear someone who is in another room because sound can travel through solids  so as the walls
are solids you can hear
the other person without a door or window.]]> 2016-02-24 08:05:38 UTC https://padlet.com/SHEERIN/rev15B/wish/96922949 https://padlet.com/SHEERIN/rev15B/wish/96923633 Flow chart]]> 2016-02-24 08:11:40 UTC https://padlet.com/SHEERIN/rev15B/wish/96923633 Gas https://padlet.com/SHEERIN/rev15B/wish/96924830 2016-02-24 08:22:05 UTC https://padlet.com/SHEERIN/rev15B/wish/96924830 Gro https://padlet.com/SHEERIN/rev15B/wish/97244417 Nithya,Aditya,Shreyas,vinay ]]> 2016-02-25 12:53:45 UTC https://padlet.com/SHEERIN/rev15B/wish/97244417 Ans to simar 's group challenge  https://padlet.com/SHEERIN/rev15B/wish/97245605 Cochlea. ..group  1 
  ]]> 2016-02-25 13:00:06 UTC https://padlet.com/SHEERIN/rev15B/wish/97245605