7.1 making and hearing sounds and 7.2 Pitch & frequency

7.1 Making and hearing sounds
      7.2 Pitch and frequency
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Slide 1: Tekstslide
physicsMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 20 slides, met interactieve quizzen, tekstslides en 4 videos.

time-iconLesduur is: 30 min

Onderdelen in deze les

7.1 Making and hearing sounds
      7.2 Pitch and frequency

Slide 1 - Tekstslide

In a loudspeaker, the part that
vibrates is the cone

in a guitar, the part that
vibrates are the strings
Sound is produced
by vibrations 
in a soundsource

Slide 2 - Tekstslide

Slide 3 - Video

Medium
You can only hear sound when there is a medium to carry it.

Sound can travel through gas, liquids and solids. And even through paint as you can see here.

Slide 4 - Tekstslide


A
YES, it's possible to hear this
B
NO, it's not possible to hear this

Slide 5 - Quizvraag


A
YES, it's possible to hear this
B
NO, it's not possible to hear this

Slide 6 - Quizvraag


A
YES, it's possible to hear this
B
NO, it's not possible to hear this

Slide 7 - Quizvraag


A
YES, it's possible to hear this
B
NO, it's not possible to hear this

Slide 8 - Quizvraag


A
YES, it's possible to hear this
B
NO, it's not possible to hear this

Slide 9 - Quizvraag


A
YES, it's possible to hear this
B
NO, it's not possible to hear this

Slide 10 - Quizvraag


A
YES, it's possible to hear this
B
NO, it's not possible to hear this

Slide 11 - Quizvraag

speed of sound
watch the instruction movie.

Slide 12 - Tekstslide

s = v . t
remember :
v = s/t
t = s/v

Slide 13 - Tekstslide

Slide 14 - Video

homework 7.1
Exercises 1 up untill 12



Slide 15 - Tekstslide

pitch and frequency
watch the instruction movie.

Slide 16 - Tekstslide

Slide 17 - Video

How many vibrations are there in 1 second? 

frequency = 1 / period
        f = 1 / T
frequency in Herz
  
  
 
frequency range  = the tones that one is able to hear.
human frequency range:
20 hz - 20.000 hz

Rudolph Heinrich Hertz

Slide 18 - Tekstslide

homework 7.2
summarize 7.2
Exercises 13 up untill 24


Slide 19 - Tekstslide

Slide 20 - Video