NCERT Class 9 Arts Chapter 7 The Science of Music

NCERT Class 9 Arts Chapter 7 The Science of Music Solutions English Medium As Per New Syllabus. to each chapter is provided in the list so that you can easily browse through different chapters NCERT Class 9 Arts Chapter 7 The Science of Music Notes and select need one. NCERT Class 9 Arts Chapter 7 The Science of Music Question Answers Download PDF. NCERT Class 9 Arts Madhurima Texbook Solutions.

NCERT Class 9 Arts Chapter 7 The Science of Music

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. CBSE Class 9 Arts Madhurima Textual Solutions in English Medium are part of All Subject Solutions. Here we have given NCERT Class 9 Arts Madhurima Notes, CBSE Class 9 Arts Madhurima Textbook Solutions for All Chapters, You can practice these here.

The Science of Music

Chapter: 7

TEXTUAL SOLUTIONS

Activity 7.1

1. Making a stringed instrument model.

Materials:

(i) Rubber bands/ threads.

(ii) An empty tissue box/ small cardboard box.

Steps:

1. Hold the rubber band between your fingers and strum it; what do you hear?

Ans: You will hear a sound. This sound is produced by the vibration of the rubber band.

2. Now, stretch the rubber band across the hollow part of the tissue box/ cardboard box and pluck it; what happens to the loudness?

Ans: The loudness increases. Using a hollow box impacts the sound by making it louder and enhancing it.

3. Stretch it tighter and pluck again. Identify what happens to the pitch of the sound— does it become higher or lower?

Ans: The pitch becomes higher. Tightening a string increases the pitch of the sound, whereas loosening it decreases the pitch.

4. Use a few rubber bands of different thickness. Observe how the sound changes in each case.

Ans: The quality of the sound changes. Changing the thickness of the vibrating string varies the sound’s overall quality.

5. Now, replace the rubber band with a piece of string or thread. How does this change the sound? (Be careful when tightening the string as it might break or hurt you)

Ans: Similar to changing the thickness, changing the material of the string (from a rubber band to a cotton or nylon thread) also varies the quality of the sound.

Activity 7.2

Connecting to musical instruments:

Look carefully at the stringed instrument in your class.

(i) Observe that the instrument has a hollow body. How do you think this enhances the sound of the instrument?

Ans: The hollow body enhances the sound by impacting and increasing its loudness.

(ii) Observe what happens when the tuning pegs are tightened and loosened. (Be careful to not tighten it too much— the string could snap.)

(a) When the strings are tightened, the pitch………………………………

Ans: increases.

(b) When the strings are loosened, the pitch……………………… (increases/ decreases/ stays the same)

Ans: decreases.

(iii) Observe that different strings also have different thicknesses. How do you think the thickness of the string affects the sound?

Ans: Changing the thickness of the string varies the overall quality of the sound.

(iv) Discuss in class: When a note is played on the instrument, listen to its tone. Describe it in words — is it short or sustained? Is it high-pitched or low-pitched?

Ans: While the exact tone depends on how the specific instrument is played and tuned, Indian classical instruments are generally known to produce a sustained and rich sound, and their strings can be tuned to either a higher or lower pitch.

Activity 7.3

1. Experiencing the human vocal systemp:

Activity	Subsystem	Body regions/parts involved
Place your hands on your belly. Take a big breath in, and notice your belly expand outwards. Now, exhale and notice how your belly moves inwards.	Air pressure system	Diaphragm,lungs, and surrounding muscles
Try the same activity again, butthis time, as you exhale, make asoft mmmm sound; experience the connection between the breath and the voice.	Vibratory system	Voice box (larynx) and vocal folds (or vocal cords)
Do the same activity, but this time,as you make a sound, first start with mmmmm and then vary the shape of your mouth to make various sounds like aaaa, oooo, eeee and uuuuu.	Resonating system	Throat, mouth,nasal cavities

Ans: Based on the textbook, the details you provided in your query already contain the correct answers! Here is the complete and correctly matched information for Activity 7.3: Experiencing the human vocal system, broken down clearly:

1. Air Pressure System:

Activity to experience it: Place your hands on your belly. Take a big breath in, and notice your belly expand outwards. Now, exhale and notice how your belly moves inwards.

Body regions/parts involved: Diaphragm, lungs, and surrounding muscles.

2. Vibratory System:

Activity to experience it: Try the same activity again, but this time, as you exhale, make a soft mmmm sound; experience the connection between the breath and the voice.

Body regions/parts involved: Voice box (larynx) and vocal folds (or vocal cords).

3. Resonating System:

Activity to experience it: Do the same activity, but this time, as you make a sound, first start with mmmmm and then vary the shape of your mouth to make various sounds like aaaa, oooo, eeee, and uuuuu.

Body regions/parts involved: Throat, mouth, and nasal cavities.

Activity 7.4

Daily vocal warm-up routine:

(Practise each exercise 5–6 times.)

1. Breathing and Diaphragm Exercise.

(i) Stand or sit straight.

(ii) Inhale deeply through the nose, letting your lungs expand (Grade 7 Chapter 9 Science textbook).

(iii) Hold for 2–3 seconds, then exhale slowly through the mouth. Benefits: Activates lungs and diaphragm, extending breath control while singing long phrases for better control and supports long phrases in singing.

2. Humming (Bhrāmarī prāṇāyāma).

(i) Hum a note at a comfortable pitch, feeling the vibration in the lips, nose, and chest.

(ii) Gently slide up and down in pitch while saying mmm.Benefits: Warms up vocal cords gently and improves resonance.

3. Lip Trills/ Bubbles.

(i) Blow air through closed lips while making a sound like a brrr or the sound of a motorbike.

(ii) Glide up and down in pitch using the lip trill. Benefits: Relaxes facial muscles, reduces tension, improves airflow.

4. Sargam exercises.

(a) Sing alaṅ kāra patterns in varying speeds to improve vocal control:

(i) SGR, RMG, GPM (complete the pattern).

(ii) SRGM, RGMP, GMPD (complete the pattern).

See how many phrases you can sing in one breath. As you practise these exercises regularly, you may notice that you can sing longer phrases in a single breath.

Benefits: Improves voice flexibility and breath control.

Ans: Here are the completed alaṅkāra patterns for the Sargam exercises mentioned in Activity 7.4.

(i) SGR, RMG, GPM… This pattern jumps one note forward and comes one note back (1-3-2). The completed pattern is: SGR, RMG, GPM, MDP, PND, DSN.

(ii) SRGM, RGMP, GMPD… This sequence consists of four consecutive notes, starting one note higher each time (1-2-3-4). The completed pattern is: SRGM, RGMP, GMPD, MPDN, PDNS.

(While your sources provide the initial parts of these sequences and explain that practicing them at varying speeds improves voice flexibility and breath control, the actual completion of these patterns relies on the standard seven Indian musical notes—Sa, Re, Ga, Ma, Pa, Dha, Ni. This specific completion is based on general musical knowledge and is not explicitly spelled out in the provided text.)