CBSE Class 8 Science Chapter 10 Sound Activities

Simple Sound Wave Experiment For CBSE Class 8 Science Project Activity 1

Aim: To understand how sound is produced by a metal. Material Required: A metal plate (like a pan) and a stick.

” Cbse Class 8 Science Sound Experiments “

Procedure:

Take the metal plate and hang it at a convenient place in such a way that it does not touch any object.

” Sound Wave Experiment Class 8 “

1. Now strike it with the stick. You will hear a sound.
2. Now, touch the pan gently with your finger. You will feel some vibrations.
3. Again, strike the pan with the stick and hold the pan tightly. Now, you will not be able to hear any sound.
4. When the plate stops producing sound, touch it again. You will find no metal plate.

Conclusion: Sound is produced when the metal pan vibrates.

Read And Learn More CBSE Class 8 Science Activities

CBSE Vibrating Ruler Frequency Experiment Class 8 Science Sound Chapter Activity 2

Aim: To produce sound with a rubber band.

Material Required: A pencil box, a rubber band, and two pencils.

Procedure:

1. Take the rubber band.
2. Wrap it around the longer side ofthe geometry box

” Vibrating Ruler Frequency Experiment “

Now, insert two pencils between the box and the 15  stretched rubber as shown in the figure.

Pluck the rubber band somewhere in the middle and observe the sound. You will find that the band starts vibrating and gives rise to sound.

Conclusion: Vibrating rubber band produces sound.

” Noise Pollution Activity For Class 8 “

CBSE Amplitude And Frequency Demonstration Activity Class 8 Science Activity 3

Aim: To find the connection between sound and vibration. Material Required: A metal dish, water, and a spoon.

Procedure:

1. Pour some water into the metal dish.
2. Now, strike the edge of the dish with the spoon. You will hear some kind of sound.
3. Again, strike the dish and then touch it. You will feel some vibrations.
4. Strike the dish again and observe the surface of the water. You will observe waves on the surface of water.
5. Now, hold the dish and note the change in waves of the water surface. You will observe that waves disappear.

” Jaltarang Experiment For Class 8 “

Conclusion

1. Water waves are visible until the sound is produced by the dish.
2. Water waves disappear when the dish stops vibrating

CBSE Noise Pollution Measurement Activity For Class 8 Science Students Activity 4

Aim: To identify the vibrating part of the musical instrument ektara.

Material Required: A hollow coconut shell, a thick wood strip, and a strong steel string.

Procedure:

1. Make a musical instrument, ekara, as shown in the diagram.
2. Play this instrument and identify the vibrating part.

” Sound Needs A Medium To Travel Activity “

Conclusion: The vibrating part in the ektara is the string

Comparing Loudness And Pitch Activity CBSE Class 8 Science Activity 5

” Simple Sound Wave Experiment For Students “

Aim: To make a jaltarang at home.

Material Required: 6-8 bowls or tumblers, water, and a pencil.

Procedure:

1. Fill all the tumblers with water. The water level of all tumblers should be different.
2. Now, take the pencil and strike all the tumblers one by one. You will hear different sounds.

” How Sound Is Produced By Vibration “

Conclusion: As the amount of water in the tumbler goes on increasing, the frequency of sound produced also goes on increasing. Hence, we hear a pleasant sound.

CBSE Class 8 Science Sound Mind Map Creation Activity Activity 6

Aim: To demonstrate the working of vocal cords to produce sound.

Material Required: Two rubber bands and paper.

Procedure:

1. Place the rubber strips one above the other and stretch them tight.
2. Now, blow air through the gap between them. Observe the sound produced.
3. Now, take the piece ofpaper with a narrow slit.
4. Hold it between your fingers and blow’ through the slit. Observe the sound produced.

” Rubber Band Sound Experiment Class 8 “

Conclusion: Vocal cords also produce sound in the same When air passes through the vocal cords, it produces sound.

CBSE Sound Chapter Class 8 Science Lab Manual Activities With Observations Activity 7

Aim: To show that sound needs a medium to travel.

Material required: Metal or glass tumbler and a cell phone.

Procedure:

1. Place the cell phone into the tumbler.
2. Ask your friend to give a ring on this cell phone from another cell phone.

” Metal Dish Sound Activity For Kids “

1. Listen to the ring carefully.
2. Now, surround the rim of the tumbler with your hands. Put your mouth on the opening between your hands.
3. Indicate to your friend to give a ring again.
4. Listen the ring while sucking air from the tumbler.
5. You will observe that the sound becomes fainter.
6. Remove the tumbler from your mouth and again notice the loudness of the sound.
7. Conclusion: Sound requires a medium to travel.

” Ektara Musical Instrument Activity “

CBSE Class 8 Science Sound Activity-Based Learning Questions Activity 8

Aim: To show that sound travels through liquid. Material required: A bucket or bath tub, clean water, and a small bell.

Procedure:

1. Fill the bathtub with clean water.
2. Take the small bell in one hand and shake this bell inside the water.
3. Make sure that the bell does not touch the body of the bathtub.
4. Place your ear gently on the water surface. Take care that water should not enter the ear. Try to listen to the sound of the bell.

” Loudness And Pitch Comparison Activity “

Conclusion: Sound can travel through liquid.