Selina solutions

Selina solutions

Grade 7

Sound | Short/Long Answer Questions

Question 10

Q10) Describe an experiment to show that sound can travel in a solid.

  • Solution

  • Transcript

Solution:

Take two empty ice cream cups. Make a small hole at the bottom of each cup and pass a long thread through them. Tie a knot or match stick at each end of the thread so that the thread does not slip out through the holes. This makes a toy - telephone.

Now, use the toy telephone as shown in figure and talk to your friend. You will be able to hear the sound of your friend. This shows that sound travels through the thread and reaches your ear. Thus, sound can travel through a solid.

So I am going to perform and I can tell you can see on screen very small picture over there from the river. So first we have to take on trade and you want to tie the threads of the boot and painted into glass into it as well. The from what you can do is speak from alright, as you can see the should die in this way the first Matchstick and it's the second master. You can try magic like this or you can water. So from this one, if you want to speak something the other person was staying here. You can hear from you. So it means that there is traveling for this. It means I'd say Update thank you for watching this video

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subject-cta

Question 10

Q10) Describe an experiment to show that sound can travel in a solid.

  • Solution

  • Transcript

Solution:

Take two empty ice cream cups. Make a small hole at the bottom of each cup and pass a long thread through them. Tie a knot or match stick at each end of the thread so that the thread does not slip out through the holes. This makes a toy - telephone.

Now, use the toy telephone as shown in figure and talk to your friend. You will be able to hear the sound of your friend. This shows that sound travels through the thread and reaches your ear. Thus, sound can travel through a solid.

So I am going to perform and I can tell you can see on screen very small picture over there from the river. So first we have to take on trade and you want to tie the threads of the boot and painted into glass into it as well. The from what you can do is speak from alright, as you can see the should die in this way the first Matchstick and it's the second master. You can try magic like this or you can water. So from this one, if you want to speak something the other person was staying here. You can hear from you. So it means that there is traveling for this. It means I'd say Update thank you for watching this video

Still have questions? Our expert teachers can help you out

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subject-cta
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