11 Waves 2021 J&N [EUT]

The diagram represents a wave on a rope. Which type of wave is shown and which labelled arrow shows the wavelength of the wave?

• longitudinal, X

• longitudinal, Y

• transverse, X

• transverse, Y

Which diagram shows waves diffracting?

• 
• 
• 
• 

The diagrams show water waves in three different situations. The arrows show the direction of travel of the waves. What does each diagram show?

• 1: diffraction, 2: reflection, 3: refraction

• 1: diffraction, 2: refraction, 3: reflection

• 1: reflection, 2: diffraction, 3: refraction

• 1: reflection, 2: refraction, 3: diffraction

A child bounces up and down on a trampoline. The instructor asks her to bounce with a higher frequency. What does the instructor mean?

• Bounce higher on the trampoline.

• Bounce more times in each minute.

• Take more time to bounce.

• Bounce with a slower speed.

Light waves pass through a gap. The diagrams show two possibilities for what occurs. Which row is correct?

• Speed changes, diagram 1 is correct

• Speed changes, diagram 2 is correct

• Speed remains constant, diagram 1 is correct

• Speed remains constant, diagram 2 is correct

A water wave passes into a region where the wave travels more slowly. As it passes into the slow region, what happens to the frequency and what happens to the wavelength of the wave?

• Frequency decreases, wavelength remains the same

• Frequency increases, wavelength remains the same

• Frequency remains the same, wavelength decreases

• Frequency remains the same, wavelength increases

The diagram shows a wave. Which dimensions describe the properties of the wave?

• P = amplitude, S = speed

• P = speed, Q = wavelength

• R = amplitude, Q = wavelength

• R = amplitude, S = wavelength

The diagram shows a wave. Which row correctly indicates the amplitude and the wavelength of the wave?

• amplitude: the distance between 1 and 2, wavelength: the distance between 4 and 5

• amplitude: the distance between 1 and 2, wavelength: the distance between 4 and 6

• amplitude: the distance between 1 and 3, wavelength: the distance between 4 and 5

• amplitude: the distance between 1 and 3, wavelength: the distance between 4 and 6

The diagrams show two patterns produced by water waves. Which two effects are shown in the diagrams?

• diagram 1: reflection, diagram 2: diffraction

• diagram 1: reflection, diagram 2: refraction

• diagram 1: refraction, diagram 2: diffraction

• diagram 1: refraction, diagram 2: reflection

Which row is not correct for quantity of a wave on the surface of water and it's usual unit?

• amplitude - m

• frequency - Hz

• wavelength - λ

• speed - m/s