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Sound

LIVE MUSIC 1: Sound

MUSIC: It is an art based on the organization of sounds in time, paying attention to harmony, melody and rhythm.
SOUND: It is a vibration that travels through the air with a movement called wave. We can hear it when it reaches our ears.

PArts of an ear image

How do we hear sounds?

Sound waves may travel through air, water and solid objects. The sound waves get into the ear canal till they make the ear drum vibrate. This vibration moves the three ear bones and they transmit the vibrations to the cochlea. The hairs on the membrane of the cochlea are stimulated and this stimulation gets to the auditory nerve, which sends the signals to the brain.
arrow up3. According to the text and image above, what is the correct order in which the parts of our ears work when we hear a sound? Mark the correct answer with an X.

- 6 - 6 - 1 - 2 - 3

- 5 - 4 - 3 - 2 - 1

- 1 - 2 - 6 - 4 - 5

- 1 - 2 - 3 - 4 - 5

Music image

1. Listen, repeat and write the word.

a. 

b. 

c.

2. Decide if the following tracks are music or noise? Mark the right answer with an X.

- Music       - Noise

- Music       - Noise

4. Do you want to know more things about sound? Use the school library or the net to find answers for the following questions:

-What is the echo? How does it work?

-What is the sonic boom?

-What is a sonar?

-What is noise pollution?

-What is the decibel scale?

Noise wave
Digital Artist. Noise wave. Pixabay. (Pixabay Licence)
Sound wave
Digital Artist. Sound wave. Pixabay. (Pixabay Licence)
arrow upIf you have a look at the images above, you will understand clearly the differences between music and noise. Let's think about them.

NOISE 

It is produced by irregular vibrations.  

It produces an irregular wave pattern. 

It can’t be reproduced.

It is irritating to the ears.

MUSIC

It is produced by periodic vibrations.

It produces a regular wave pattern.

It can be reproduced.

It is pleasing to the ears.
Team work
5. TEAMWORK: Write the answers to these questions on your notebook. Then in groups of four share your answers. The whole class and the teacher decide which are the best answers and, after writing them on the blackboard, all students copy them into their notebooks.

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Sound. Qualities of sound

1. These are the qualities of sound: intensity, duration, pitch and timbre. Study the definitions and practise the words aloud. Then complete the words under the sound boxes.

TIMBRE: It is the quality of sound that allows us to distinguish different voices and different instruments. It is also called tone colour.

DURATION: It indicates the length a sound lasts. Sounds may be short or long.


PITCH: It is the quality of sound that allows us to classify sounds as high or low.

INTENSITY: It is the characteristic of sound that tells us the difference between a loud sound (forte) and a soft sound (piano).

There are some degrees of intensity: pianissimo (pp)→ really soft / piano (p)→ soft / mezzoforte (mf)→ middle / forte (f)→ loud / fortissimo (ff)→ really loud. Listen to the words and write them.

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