2-Waves Flashcards
1
Q
what are waves measured in?
A
hertz
2
Q
hertz
A
number of cycles per second
3
Q
Amplitude
A
height of a wave as measured from the highest point on the wave (peak or crest) to the lowest point on a wave (trough)
4
Q
Wavelengths
A
length of the wave from one peak to the next
5
Q
Frequency
A
number of waves that pass a given point in a given time period and is often expressed in terms of hertz (Hz) or cycles per second
- Longer wavelengths→ lower frequencies
- Shorter wavelengths→ higher frequencies
6
Q
Visible spectrum
A
- portion of the larger electromagnetic spectrum that we can see
- Red = longer wavelengths
- Greens = intermediate wavelengths
- Blues and violets = short wavelengths
frequency is associated with colour
7
Q
Electromagnetic spectrum
A
all the electromagnetic radiation that occurs in our environment
8
Q
relationship of colour and amplitude?
A
- Amplitude of light waves is associated with ur experience of brightness or intensity of colour
- larger amplitudes = brighter
9
Q
relationship of frequency and sound?
A
- High frequency = high pitch
- Low frequency = low pitch
10
Q
relationship of amplitude and sound?
A
amplitude is associated with loudness (dB,decibels)
11
Q
Timbre
A
the sound’s purity
