PLEASE ANSWER FOR ALL QUESTIONS
CLASS-8 CBSE SCIENCE SOUND LESSON
1. HOW IS SOUND PRODUCED ?
2. DISCUSS THE IMPORTANCE OF SOUND IN OUR DAILY LIFE.
3. HOW DOES SOUND TRAVELS FROM ONE PLACE TO ANOTHER.
4. WHY SOME SOUNDS ARE LOUDER THAN OTHER ?
5. VIBRATING OBJECTS PRODUCES SOUND. CAN WE SEE THE VIBRATIONS ALL THE TIME ?
6. WHAT ARE THE VIBRATING PARTS OF VEENA , FLUTE AN TABLA ?
7. NAME SOME IMPORTANT MUSICAL INSTRUMENTS WHICH ARE SIMPLY BEATEN OR STRUCK TO PRODUCE SOUND ?
8. DOES ANY PART OF HUMAN BODY VIBRATE WHILE SPEAKING OR SINGING A SONG ?
9. HOW IS SOUND PRODUCED FROM GUITAR ?
10. EXPLAIN WITH AN ACTVITY THAT VIBRATING OBJECT PRODUCES SOUND.
Answers
Answer:
such a long question but still I will help you out
Explanation:
ans 1) sound is produced by the vibration of particles (molecular particles)
ans 2) sound is very important in our life as it helps in the process of communication thus increasing our efficiency
ans 3) sound travels from one place through other with the help of a medium like air or water or anything which have molecules so that their vibration can help to transfer sound
ans 4) some sound are louder than other depending on their frequencies and wavelength
speed of light = wavelength * frequency
shorter the frequency shriller the sound becomes
and larger the frequency louder the sound grows
ans 5)no it is not possible to see these vibration all the time because they are not visible to naked eye, however vibrations can be felt
ans 6) vibrating parts of veena is it's string and vibrating part of tabla is it's membrane
ans7) some musical instruments which are struck to produce sound are : drum,tabla,piano,etc.
ans8) the part of human which vibrates while speaking is larynx also called as human voice box
ans 9) a sound is produced from a guitar when the string of guitar vibrates this vibration of particles creates sound
ans 10) the activitiy of hanging a cooker with a string and then beating it with stick can clearly demonstrate that vibration produces sound
at the end I would like you to rate my answers as I did a lot of hardwork for your good