Physics - Wave speed, frequency and wavelength

• What does a frequency of 440 Hz indicate for a sound wave?

  440 waves pass the ear every second
• What is wave speed represented by?

  $v$
• What does 1 Hz represent?

  One cycle per second
• What is the definition of frequency?

  Frequency is how many waves pass a point each second
• How is frequency measured?

  Frequency is measured in hertz (Hz)
• In what units is wave speed typically measured?

  Meters per second (m/s)
• How does frequency relate to wave speed?

  Higher frequencies often lead to faster wave speeds
• What is the name of the wave feature labeled "resting position" in the image?

  Resting position
• If the wavelength of the wave is 5 cm, what is the distance between the peak and the resting position?

  The distance between the peak and the resting position is half the wavelength, which is $2.5\text{ cm}$.
• What are the key concepts related to frequency?

  • Frequency is the number of waves per second
  • Measured in hertz (Hz)
  • 1 Hz equals one cycle per second
  • Example: 440 Hz corresponds to the note A
  • Higher frequency usually means faster wave speed
• How is wavelength represented in physics?

  By the symbol $\lambda$
• What do the green arrows in the diagram indicate?

  Measurements of wavelength
• How can the wavelength of a wave be determined from the image?

  The wavelength can be determined by measuring the distance between two consecutive peaks or troughs in the wave.
• How is wave speed defined?

  It is how quickly a wave moves through a medium
• What does wavelength measure in a wave?

  Distance between peaks or troughs
• What are the two measurements of wavelength shown in the diagram?

  • Distance between peaks
  • Distance between troughs
• What are the key features of a wave shown in the image?

  • Peak: The highest point of the wave
  • Trough: The lowest point of the wave
  • Wavelength: The distance between two consecutive peaks or troughs
  • Resting position: The position where the wave is at rest
• What is the formula for wave speed?

  $v =$$f \times \lambda$
• What is the name of the wave feature labeled "trough" in the image?

  Trough
• What is the wave speed equation?

  $v =$$f \times \lambda$
• What is the formula for frequency?

  $f =$$v / \lambda$
• What musical note corresponds to a frequency of 440 Hz?

  The note A
• What is the wave speed equation?

  $v =$$f \times \lambda$
• What do the variables in the wave speed equation represent?

  v is speed, f is frequency, λ is wavelength
• What is the name of the wave feature labeled "peak" in the image?

  Peak
• What do the variables in the wave speed equation represent?

  v is speed, f is frequency, λ is wavelength
• What is the definition of wavelength?

  Distance between one peak and the next
• How do you find the wave speed of a sound wave with a frequency of 440 Hz and speed of 340 m/s?

  Use $\lambda =$$\frac{v}{f}$
• How are wave speed, frequency, and wavelength related?

  Wave speed ($v$) is the product of frequency ($f$) and wavelength ($\lambda$). They are interconnected; changing one affects the others. The image shows this relationship in a triangle.
• What is the formula for wavelength?

  $\lambda =$$v / f$
• What are the steps to calculate wave speed using the wave speed equation?

  1. Identify frequency (f) and wavelength (λ)
  2. Apply the equation: $v =$$f \times \lambda$
  3. Calculate wave speed (v)
• What is the wavelength of a sound wave traveling at 340 m/s with a frequency of 440 Hz?

  0.77 m
• How does the triangle rule relate frequency, wavelength, and speed?

  • Multiply frequency and wavelength to find speed
  • Divide speed by frequency to find wavelength
  • Divide speed by wavelength to find frequency
• What are the steps to calculate wavelength from wave speed and frequency?

  1. Identify wave speed (v) and frequency (f)
  2. Rearrange the equation: $\lambda =$$\frac{v}{f}$
  3. Calculate wavelength (λ)
• If a water wave has a frequency of 2 Hz and a wavelength of 0.5 m, what is its wave speed?

  1 m/s
• How do the peak and trough features of the wave relate to the resting position?

  • The peak is the highest point above the resting position.
  • The trough is the lowest point below the resting position.
  • The resting position is the reference point from which the wave's displacement is measured.
• What is the name of the wave feature labeled "wavelength" in the image?

  Wavelength
• What units should measurements be in for the wave speed equation?

  Meters for distance, hertz for frequency