Noise pollution

Question 1 What are causes of noise pollution? Question 2 What is the difference between noise and music? Question 3 What is partial hearing.What are the usual cause of noise pollution? Question 4 What is meant by noise pollution? Question 5 Explain how noise pollution is harmful to human beings? Question 6 State the various…

Musical instruments

Question 1 Name the substance which vibrate in a flute to produce sound? Question 2 Name 4 types of musical instruments? Question 3 Give example of stringed musical instruments? Question 4 Give example of wind musical instruments? Question 5 Give example of membrane musical instruments? Question 6 Give example of plate type musical instruments? Question…

Noise and music

Question 1 What is noise? Question 2 Give examples of noise? Question 3 What is musical sound? Question 4 How is noise produced? Question 5 How is musical sound produced? ​The unpleasant sounds around us are called noise. Noise is produced by the irregular vibrations of the sound producing source. For Ex: Running of mixer…

Audible and Inaudible sound

​Question 1 Why we do not hear the screams of a bat? Question 2 What is the name of very high frequency sound which cannot be heard by human ears? Question 3 What is an audible sound? Question 4 What is an inaudible sound? Question 5 State few uses of ultrasound? Question 6 What is…

Characteristics of sound

Question 1 How does the loudness depends on the amplitude of vibration? Question 2 By how much the loudness of sound changes when the amplitude of vibrations is doubled and halved? Question 3 Name the unit to measure the loudness of sound? Question 4 What is the loudness of normal conservation in decibels? Question 5…

Amplitude, time-period and frequency of vibration

Question 1 Define the term vibration? Question 2 How is simple pendulum made? Question 3 What is the relation between time period and frequency of an oscillating body? Question 4 Name 3 characteristics which are used to describe oscillations? Question 5 Define the term amplitude? Question 6 How can we increase the amplitude of vibration?…

Ears

Question 1 Draw a neat and labelled diagram of human ear? Question 2 Explain the working of human ear? Question 3 Name the organ of hearing in human being? Question 4 Name that part of ear which vibrates when outside sound falls on it? Question 5 Name the three tiny bones present in the middle…

Speed of sound

Question 1 What is the speed of sound in air? Question 2 What is the speed of sound in water? Question 3 What is the speed of sound in solids? Question 4 Where would sound travel faster- in wood or water? Question 5 In which medium sound travel faster- air or iron? Question 6 When we put…

Sound needs a medium for propogation

Question 1 What does the working of a toy telephone tell us about sound? Question 2 Name ​one solid, liquid and a gas through which sound can travel? Question 3 Why sound cannot travel through vacuum? Question 4 Define the term medium? Question 5 How can you show that sound cannot travel vacuum? Question 6…

Sound produced by humans

Question 1 What is the length of vocal cords in a man? Question 2 Out of a man and a woman who has shorter vocal cords? Question 3 Out of a man and a woman who produces sound of higher pitch? Question 4 Name the sound producing organs in humans? Question 5 Which part of the…

Sound is produced by vibrating object

Question 1 How is sound produced? Question 2 What should an object do to produce sound? Question 3 How does a sound making object differ from one that is silent? Question 4 Name the part which vibrates to produce sound in drums, sitar and flute? Question 5 What brings the sound of a ringing telephone…