Waves & Information Transfer - Unit Review

What is the primary medium through which sound waves travel?

• Vacuum

• Water

• Air

• Metal

In the context of information transfer, which of the following is a digital signal?

• A) Continuous wave

• B) Analog signal

• C) Binary code

• D) Sound wave

What is the amplitude of the blue wave?

• 1

• 2

• 2.5

• 3

• 4

The amplitude of the wave at t=2 is ____.

• 1

• 2

• 2.5

• 3

• 4

What is the amplitude of the blue wave?

• 1

• 2

• 2.5

• 3

• 4

Fill in the blank: At time t=3, the wave shown in red has an amplitude of ____.

• 1

• 2

• 2.5

• 3

• 4

Which of the following waves would you expect to have the most energy?

• Yellow

• Blue

• Red

• Green

Fill in the blank: The wave with the highest frequency is the ______ wave.

• A. Yellow

• B. Blue

• C. Red

• D. Green

What is the wavelength of the wave shown in the diagram?

• 180

• 270

• 360

• 450

Select all the statements that are true about the graph of a sine and cosine wave shown in the graph below. The x-component of the graph is time.

• Both waves have the same wavelength.

• Both waves have the same amplitude.

• Both waves have the same frequency.

• Both waves have the same general shape.

• Both the red and blue graphs do not depict waves.