Ultrasound and Infrasound
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Lesduur is: 50 minOnderdelen in deze les
Slide 1 - Tekstslide
Label the diagram.
Crest
Amplitude
Wavelength
Trough
Slide 2 - Sleepvraag
Match the keywords to the definitions.
The number of waves per second.
The distance between the same point on neighbouring waves.
The distance between the middle of the wave and the top or bottom.
Frequency
Amplitude
Wavelength
Slide 3 - Sleepvraag
What is the unit of loudness?
A
Decibels (Db)
B
Hertz (Hz)
C
Meters per second (m/s)
D
Amps (A)
Slide 4 - Quizvraag
What is the unit of frequency?
A
Decibels (Db)
B
Hertz (Hz)
C
Meters per second (m/s)
D
Amps (A)
Slide 5 - Quizvraag
Which wave is louder?
A
Top
B
Bottom
Slide 6 - Quizvraag
Which wave is higher pitched?
A
Top
B
Bottom
Slide 7 - Quizvraag
Loudness (loud to quiet)
Pitch (high to low)
A
A
B
B
C
C
D
D
Slide 8 - Sleepvraag
Slide 9 - Tekstslide
Slide 10 - Tekstslide
Slide 11 - Tekstslide
Slide 12 - Tekstslide
Slide 13 - Tekstslide
Slide 14 - Video
Slide 15 - Tekstslide
Slide 16 - Tekstslide
Slide 17 - Video
Name an animal which can hear lower frequency sounds than humans.
Slide 18 - Open vraag
Name an animal which can hear higher frequency sounds than humans.
Slide 19 - Open vraag
State a frequency of noise that a dog can hear but a mouse cannot.
Slide 20 - Open vraag
State a frequency of noise that a mouse can hear but a dog cannot.
Slide 21 - Open vraag
Dog whistles have a frequency range of 22,000 to 45,000 Hz. Why can a dog hear it but no one else can?
Slide 22 - Open vraag
Slide 23 - Tekstslide
Slide 24 - Tekstslide
Slide 25 - Video
Slide 26 - Tekstslide
Slide 27 - Video
Slide 28 - Tekstslide
Slide 29 - Tekstslide
Slide 30 - Tekstslide
Slide 31 - Tekstslide
Why do we use ultrasound instead of x-rays to see a foetus inside the mother's uterus?
