Question

11. What property of waves would help measure the height of the waves in a

Tsunami?
a. Wavelength
b. Frequency
c. Wave speed
d. Amplitude

12. What inference can be made about the wavelength of a wave with a constant speed and a low frequency
a. The wavelength is short
b. The wavelength is long
c. Must be a mechanical wave
d. Must be a wave in the electromagnetic spectrum

13. The wave speed of an electromagnetic wave is constant when travelling through a medium. Which formula below is the correct one to use when calculating for wave speed
a. Wave speed = frequency x period
b. Wave speed = period x wavelength
c. wave speed = frequency x wavelength
d. Wave speed = crest x trough

Answer 1

Answer: amplitude would help measure height

low f, constant speed, long wavelength

speed = frequency x wavelength

Explanation: constant speed, low frequency

frequency = speed/wavelength; at constant speed f proportional to 1/wavelength, so low f __> long wavelength

speed = freq*wavelegth