4 s.
0.2 s
5 s
0.4 s

2. On a stationary wave, points of zero displacement occur every 1/2 wavelength, and are known as:

rarefactions
fringes
phases
nodes

3. In the diagram:

the points which are 1/2 a cycle out of phase are:

A&B, B&E, and C&F
A&E, and D&H
A&D, E&G, and B&F
C&F only

4. The energy of a standing wave remains in the system only if:

no sound is produced
no dampening occurs
it is not in a vacuum
both ends of the wave are fixed

5. For maximal diffraction to occur the wavelength of the wave must be:

significantly smaller than
significantly larger than
close to
exactly

the size of the gap through which the wave must travel.

6. What is the resulting electronic wave signal when the purple and green pulses are superimposed?

7. When a beam of light from a diver’s flashlight leaves the water, it bends:

Towards the normal as its speed decreases
Towards the normal as its speed increases
Away from the normal as its speed decreasesclose to
Away from the normal as it speed increases

8. Progressive waves transfer energy and matter:

True
False

9. Sound travels at about 340 m/s in air. If Mozart plays a C on his piano, at a frequency of 1024 Hz, what is the wavelength of the note he played?

2.02 m
0.332 m
3.02 m
512 mm

10. The four properties common to all waves are:

reflection, displacement, superposition, and interference
propagation, progression, compression, and diffraction
reflection, refraction, diffraction, and interference
construction, destruction, superposition, and progression