2-Waves

Question 1

what are waves measured in?

Answer 1

hertz

Question 2

hertz

Answer 2

number of cycles per second

Question 3

Amplitude

Answer 3

height of a wave as measured from the highest point on the wave (peak or crest) to the lowest point on a wave (trough)

Question 4

Wavelengths

Answer 4

length of the wave from one peak to the next

Question 5

Frequency

Answer 5

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

Question 6

Visible spectrum

Answer 6

• 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

Question 7

Electromagnetic spectrum

Answer 7

all the electromagnetic radiation that occurs in our environment

Question 8

relationship of colour and amplitude?

Answer 8

• Amplitude of light waves is associated with ur experience of brightness or intensity of colour
  
  • larger amplitudes = brighter

Question 9

relationship of frequency and sound?

Answer 9

• High frequency = high pitch
• Low frequency = low pitch

Question 10

relationship of amplitude and sound?

Answer 10

amplitude is associated with loudness (dB,decibels)

Question 11

Timbre

Answer 11

the sound’s purity