Read and download CBSE Class 8 Science Activity How Does Sound Travel in NCERT book for Class 8 Science. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Science textbook for Class 8 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 8 Science to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 8 Science How Does Sound Travel
Class 8 Science students should refer to the following NCERT Book How Does Sound Travel in Class 8. This NCERT Book for Class 8 Science will be very useful for exams and help you to score good marks
How Does Sound Travel NCERT Book Class 8
SOUND
'Sound is produced by vibrating bodies. When you pluck a stretched rubber band, it makes sound,' read Dhwani from her physics book. 'How does this sound reach our ears?', wondered Dhwani. Her father who was sitting nearby explained to her that the air molecules just next to the rubber band start vibrating. These in turn pass the vibrations from one part to another. The air molecules themselves do not move from the rubber band toyour ears. Come let me show you how that happens.
Flick the first card so that it falls on the next card. What do you see? Do you notice that the event of the first card tipping on the second card is repeated in sequence along the whole length of the cards? On tipping one card the impact travels until the very last card falls down. This is how a sound wave travels? The cards represent the molecules. They stay on at their positions but pass on the impact or pulse from one card to the other till the end. Dhwani was thrilled to see this. It was such fun to see the cards falling one by one. She then recalled how once Suniyo, her friend had flattened all the cycles placed in the cycle stand in their school. This activity raised several questions in Dhwani's mind. Will sound travel through vacuum? How differently does it travel through solids than in gases? She had learnt in an earlier class that the molecules are tightly packed in solids as compared to gases. Since her scientist father seemed to have answers to all her questions, she went to him with all her queries. He just told her to collect a few things. Come on, you too join Dhwani.
What to do:
Tie a spoon in the middle of a piece of string about 50 cm long and hold it as shown in the first diagram. Ask a friend to hit gently the spoon with another spoon or a ruler. Listen carefully to the sound. The sound lasts for a while. Now hold the ends of the string in your ears. Look at the next picture to see how it is to be done. Ask your friend to hit the spoon again with another one. Is the sound louder or feeble than before? How does the sound travel to your ears in the first case? What is the difference in the way sound now travels when you hold the strings to your ears.
Please refer to the link below - CBSE Class 8 Science Activity How Does Sound Travel
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Science NCERT Book Class 8 How Does Sound Travel
The above NCERT Books for Class 8 Science How Does Sound Travel have been published by NCERT for latest academic session. The textbook by NCERT for How Does Sound Travel Science Class 8 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to How Does Sound Travel NCERT etextbooks as the exams for Class 8 Science are always asked as per the syllabus defined in these ebooks. These Class 8 How Does Sound Travel book for Science also includes collection of question. We have also provided NCERT solutions for Class 8 Science which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 8 students.
NCERT Book Class 8 Science How Does Sound Travel
The latest NCERT book for How Does Sound Travel pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 8 Science How Does Sound Travel are designed to enhance the overall understanding of students. All Class 8 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 8 students.
How Does Sound Travel NCERT Book Class 8 Science
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Class 8 Science How Does Sound Travel NCERT Book
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Class 8 How Does Sound Travel NCERT Book Science
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