YR1_T1_LSN4

• Science
• Middelbare school
• havo, vwo
• Leerjaar 1

HAVE READY

Textbook (open on §1.4)

Notebook (open on a new page)

Macbook:

• Google Classroom
• Lessonup
• Magister

TOPIC 1 - OBSERVING THE WORLD

§1.4 - Sound

§1.4 - Learning Goals:

Knowledge:

• I know what sound is and how it travels.
• I know what frequency is and how changing the frequency affects the pitch of a sound.
• I know what amplitude is and how it affects the loudness of a sound.

Language:

• I can explain how sound travels.
• I can explain the differences between frequencies and amplitudes and what can cause this.

Skills:

• I can draw a sound wave of a high frequency or a low frequency sound.
• I can draw a sound wave of a quiet sound and a loud sound.

§1.4 - Key Words:

• Vibrations
• Frequency
• Wavelength
• Sounds
• Amplitude
• Decibels
• Pitch

Sound

§1.4 - Sound:

Sound is energy that makes molecules vibrate.

The molecules pass on the energy until it runs out.

If your ear is in range of the vibrations you can hear the sound

Soundwaves:

• Sound waves are the movement of molecules because of sound energy. 
• The amplitude is the height of the wave.
• The wavelength is the complete length of one wave.

Sound volume:

• The amplitude is the height of the sound wave. This shows the loudness of the sound.
• A bigger amplitude is a louder sound.

Frequency:

• The frequency of a sound wave is the measure of the speed of the vibrations.
• A higher frequency is a higher pitch, a lower frequency is a lower pitch. 

• What is an example of a high pitched sound?

How loud is the sound?

• The loudness of a sound is measured in decibel (dB)

How loud is the sound?

115 dB

110 dB

90 dB

§1.4 - Learning Goals:

Knowledge:

• I know what sound is and how it travels.
• I know what frequency is and how changing the frequency affects the pitch of a sound.
• I know what amplitude is and how it affects the loudness of a sound.

Language:

• I can explain how sound travels.
• I can explain the differences between frequencies and amplitudes and what can cause this.

Skills:

• I can draw a sound wave of a high frequency or a low frequency sound.
• I can draw a sound wave of a quiet sound and a loud sound.

Summary of the day:

Write down two things you learned today, use the learning goals to help you along: