Click on a question number!





































1.
A wave with a low frequency must have a

high speed
small amplitude
short wavelength
long period






































2.
What is stellar aberration and how was it relevant to the ether hypothesis?

Answer





































3.

Choose all correct options below (unless all are incorrect):

Which of the following is/are an electromagnetic wave?

(For multiple selections, press "Ctrl" while clicking.)







































4.
Which of the following is carried from my throat to your ear when I speak to you?
(You can check 0, 1, or 2 boxes before submitting.)

air
energy







































5.
A musician plays a concert A, whose period is 1/440 of a second.  The speed of sound in the concert hall is 330 m/s.  What is the wavelength of this wave?

m







































6.
Physicists in the late 1800s interpreted Maxwell's equations as saying that all light travels at 3 x 108 m/s relative to

the ether
the light source
the person observing the light
the Earth






































7.
When we "add" two waves with equal amplitude, the amplitude of the sum can be

(You can check 0, 1, or 2 boxes before submitting.)

larger than the individual amplitudes
smaller than the individual amplitudes







































8.
What do observations of double stars tell us about the nature of light?

Answer





































9.
Which of these waves can exhibit interference?

water waves
sound waves
light waves
all of the above






































10. An electric field can be induced by