Class - 9 / SOUND / VIDEO SUBSCSRIBING LINKS

SOUND introduction :

https://www.youtube.com/watch?v=3-xKZKxXuu0

BELL JAR Experiment :

https://www.youtube.com/watch?v=hIOqX4uJtYY

Characteristics of sound waves :

https://www.youtube.com/watch?v=XV-gwpFM3d4

Experiment to calculate propagation velocity of sound wave through SLINKY :

https://www.youtube.com/watch?v=FUBGrH-PbsU#action=share

Experiment to verify LAWS OF REFLECTION :

https://www.youtube.com/watch?v=5bT0BQx9UI8#action=share

Application of ULTRASONIC SOUND :

https://www.youtube.com/watch?v=9X6HwEObo4w

SONAR :

https://www.youtube.com/watch?v=wTcaFYeUR10

HUMAR EAR structure :

https://www.youtube.com/watch?v=p3Oy4lodZU4