YR1_T1_LSN7

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

Get ready:

• Your Laptop (join this lessonup).
• Your notebook.
• Your textbook.
• Pen & highlighter.

Plan for today:

• Theory 1.4 (30 min)
  
• Short break (5 min)
• Online experiment: Sound simulation (30 min)
• Homework (remaining time)

Topic 1: Observing the World

Learning Goals:

• I can explain what sound is and how it travels
• I know what frequency is and how changing the frequency affects the pitch of a sound
• I can draw a sound wave of a high frequency or a low frequency sound
• I know what amplitude is and how it affects the loudness of a sound
• I can draw a sound wave of a quiet sound and a loud sound

Key words:

• sound
• sound frequency 
• pitch
• wavelength
• amplitude

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.

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?

High pitched sound = Whistle

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.

How loud is sound?

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

How loud is sound?

115 dB

110 dB

90 dB

Learning Goals:

• I can explain what sound is and how it travels
• I know what frequency is and how changing the frequency affects the pitch of a sound
• I can draw a sound wave of a high frequency or a low frequency sound
• I know what amplitude is and how it affects the loudness of a sound
• I can draw a sound wave of a quiet sound and a loud sound

Plan for today:

• Theory 1.4 (30 min)
  
• Short break (5 min)
• Online experiment: Sound simulation (30 min)
• Homework (remaining time)

Short break

If you need to go to the toilet, please let me know now!

Otherwise stay in the classroom!

Plan for today:

• Theory 1.4 (30 min)
  
• Short break (5 min)
• Online experiment: Sound simulation (30 min)
• Homework (remaining time)

Online experiment: sound simulation

Open the document EXP1.4: Sound simulation in classroom.

Use a headphone or earbuds and make the exercises  

Plan for today:

• Theory 1.4 (30 min)
  
• Short break (5 min)
• Online experiment: Sound simulation (30 min)
• Homework (remaining time)

Homework for lesson 6:

• Complete the exercises on page E26 & E28.
  
• Study glossary Topic 1.4 on StudyGo

• First 5 min in red light! (=silence)  
• After 5 min orange light (= whisper)