What is Sound transmission medium ?
Sound travels through a medium (gas, liquid or solid). It cannot travel in vacuum.
SOUND
What is wind pipe ?
Trachea, or wind pipe, is one part of your airway system. Airways are pipes that carry oxygen-rich air to your lungs and carbon dioxide rich air outside to body.
What is frequency of oscillation ?
The number of oscillations or vibrations per second is called the frequency of oscillation.
What is hearing ?
The eardrum senses the vibrations of sound, It sends the signals to the brain. This process is called hearing.
What is Pitch ?
Pitch depends on the frequency of the sound waves. If the frequency of vibrating body is higher, we say that the sound is shrill and has a high pitch. On the other hand, if the sound is said to have a lower pitch then it has a lower frequency of vibration or less shrill. Pitch …
What is noise , noise pollution and its effects ?
Unpleasant sounds are called noise.Excessive or unwanted sounds lead to noise pollution. Noise pollution may cause health problems for human beings. Attempts should be made to minimise noise pollution.
How to reduce noise pollution ?
Plantation on the roadside and elsewhere can reduce noise pollution. Normally noise which is less than 115 dB is tolerable (for a shorter period) We can reduce noise Pollution by following mentioned Tips: Turn off Appliances at Home and offices. Shut the Door when using noisy Machines. Use Earplugs. Lower the volume. Stay away from …
Hearing Impairment
Hearing ImpairmentTotal hearing impairment, which is rare, is usually from birth itself. Partial disability is generally the result of a disease, injury or age. Children withimpaired hearing need special care. By learning sign language, such children can communicate effectively. Because speech develops as the direct result of hearing, a child with a hearing loss may …
What are the Harms of Noise
Pollution?
Do you know that presence of excessive noise in the surroundings may cause many health related problems. Lack of sleep, hypertension (high blood pressure), anxiety and many more health disorders may be caused by noise pollution. A person who is exposed to a loud sound continuously may get temporary or even permanent impairment of hearing.
What is an ultrasonic sound wave ?
Sound waves with frequencies higher than 20000 Hz of human hearing are called ultrasound. This is used in many different fields such as navigation, medicine, imaging, cleaning, mixing, communication, testing etc. Even in nature, bats use this particular technique for the location of prey and obstacles.