What is sound?

What are the three things we need to hear a sound?

• a guitar, a medium and an ear

• something to produce the sound and a guitar

• a medium, a guitar and an ear

• something/someone to produce the sound, a medium and an ear

Why do we hear a sound?

• because of the vibrations that travel into our ears through waves

• because we love music

• because we pay attention

• because we can play the guitar

Sounds speed depends on...

• the temperature

• the frequency

• the medium it travels trough

• the sound of the guitar

Through which medium does sound travel faster?

• through liquids

• through solids

• through gases

• through a vacuum

Why do we recognize sounds when we hear them?

• because we listen

• because of their properties and characteristics

• because we pay attention

• because we love music

The three properties of the sound are...

• timber, intensity and frequency

• intensity, volume and frequency

• timber, pitch and frequency

• intensity, pitch and timber

Intensity lets us identify if a sound is...

• high or low

• loud or soft

• long or short

• very long

Pitch lets us to identify...

• high and low sounds

• long and short sounds

• loud or soft sounds

• beautiful sounds

By timber we can identify...

• high and low sounds

• who or what is producing the sound

• long and short sounds

• who is playing the guitar

Do you know what echo is??

• is a kind of music

• is when you scream very loud

• is when sounds waves bump against an obstacule and go back to the listener

• is when sounds waves travel very fast