NATURE OF SOUND
Sound of Class 9
Energy is of different form in this exercise we will study a different form of energy known as sound. Sound energy effects our sensation of hearing through the ear. The sensation is produced by waves in an elastic medium that is known as longitudinal, In these types of waves the vibrations or oscillations of the particles are in the same direction in which the wave propagates.
- SOUND NEEDS A MATERIAL MEDIUM FOR ITS PROPAGATION
- SONIC BOOM
- Introduction sound
- THE HUMAN EAR
- NATURE OF SOUND
- PRODUCTION OF SOUND WAVES
- PROPAGATION OF SOUND
- CHARACTERISTICS OF SOUND
- RANGE OF HEARING
- REFLECTION OF SOUND
- SPEED OF SOUND IN DIFFERENT MEDIUM
- EFFECT OF TEMPERATURE ON THE SPEED OF SOUND
- RELATION BETWEEN SPEED OF SOUND, TIME OF HERING ECHO-AND DISTANCE OF REFLECTING BODY
- AUDIBLE, INFRASONIC AND ULTRASONIC WAVES
- ULTRASOUND
- SONAR
- REASON FOR USING ULTRASONIC WAVES IN SONAR
- Solved questions
- Exercise 1
- Exercise 2
- Exercise 3
- Exercise 4 (Fill in the blanks)
- Exercise 5 (Subjective)
- Mind Map
