What do sounds travel in

Sound waves travel faster and more effectively in liquids than in air and travel even more effectively in solids. This concept is particularly hard to believe since our general experiences lead us to hear reduced or garbled sounds in water or behind a solid door. There are reasons for this. Most of our everyday experiences are when a sound travels first through air and then through water or a solid. When the sound wave transfers from air into a solid some of it is reflected back into the air and some may be absorbed by the new medium.

The noise coming from a room will be reduced if an observer outside closes the door. Sound from within the room will travel to the closed door and start it vibrating. The vibrating door will set the air on the outside vibrating too and a little of the original sound will be transmitted to the observer. Book a free class! Solution Transcript. Solution : Sound is a mechanical wave which results from the back and forth vibrations of the particles of the air medium through which the sound wave is moving.

Set your child up for success with Lido, book a class today! Maths Class 6 Class 7 Class 8. Science Class 6 Class 7 Class 8. Selina Question Bank. Physics Class 6 Class 7 Class 8. Biology Class 6 Class 7 Class 8. Allied Question Bank. Chemistry Class 6 Class 7 Class 8. Imagine a church bell. When a bell rings, it vibrates, which means the bell itself flexes inward and outward very rapidly. As the bell moves outward, it pushes against particles of air.

Those air particles then push against other adjacent air particles, and so on. As the bell flexes inward, it pulls against the adjacent air particles, and they, in turn, pull against other air particles.

This push and pull pattern is a sound wave. The vibrating bell is the original disturbance, and the air particles are the medium. Sound isn't restricted to moving through the air. Press your ear against a solid surface like a table and close your eyes.

Tell someone else to tap his or her finger on the other end of the table. The tapping becomes the initial disturbance. Each tap sends vibrations through the table. The particles in the table collide with each other and become the medium for the sound. The particles in the table collide with air particles between the table and your eardrum. When a wave moves from one medium to another like this, it's called transmission.