A Multiple Choice
identify the letter of the choice that best completes the statement or answers the question
1. Electromagnetic waves are
a transverse waves
b. longitudinal waves.
2. Electromagnetic waves
a need a medium to travel through
b. can travel through a vacuum.
3. Which of these electromagnetic waves has the shortest wavelength?
a. Infrared waves
b. Light waves
c. Radio waves
d. X-rays
e. Ultraviolet waves
4. Compared to the wavelength of ultraviolet waves, the wavelength of infrared waves is
a. the same
b. shorter.
c. longer.
5. Compared to the velocity of radio waves, the velocity of visible light waves is
a. slower.
b. faster.
c the same
6. The source of ali electromagnetic waves is
a. magnetic fields.
b. sun