Online Resources
What is Matter?
https://www.youtube.com/watch?v=68QDZAl29oE
What is Sound?
https://www.youtube.com/watch?v=gdGyvGPZ1G0
How your ear works?
https://www.youtube.com/watch?v=HMXoHKwWmU8
Why does sound travel faster in summer than in winter?
https://www.youtube.com/watch?v=3Br66N7QHpM
What is Matter?
https://www.youtube.com/watch?v=68QDZAl29oE
What is Sound?
https://www.youtube.com/watch?v=gdGyvGPZ1G0
How your ear works?
https://www.youtube.com/watch?v=HMXoHKwWmU8
Why does sound travel faster in summer than in winter?
https://www.youtube.com/watch?v=3Br66N7QHpM