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50. The rise of pirate micropower radio stations in the United States in the 1990s led the
federal government to approve a new class of noncommercial low-power FM radio stations in
2000.
A) True
B) False
51. The telegraph was useless as a means of communicating between ships at sea or between
ships and the shore because ______.
A) its signal was too weak to travel across bodies of water
B) the telegraph signal was distorted by the electromagnetic spectrum
C) telegraph equipment was too cumbersome to be used aboard ship
D) the telegraph required a wire cable connecting the sending and receiving stations
E) All of the options are correct.
52. The very earliest uses of Marconi’s wireless radio were for ______.
A) military and commercial shipping
B) gossip and shipping
C) advertising and the military
D) entertainment and ads
E) playing rock-and-roll records
53. The ______ was important to radio technology because it allowed radio signals to be
amplified.
A) Hertz
B) Audion vacuum tube
C) cathode ray tube
D) telephony
E) electromagnetic wave
54. Which statement best indicates how inventors and government offices were able to
establish who was responsible for early developments in radio technology?
A) Patents clearly indicate who invented what piece of technology first.
B) Only Italians and Americans were interested in early broadcasting.
C) Inventors respected other inventors out of a sense of professional courtesy.
D) The early days of radio were heavily regulated, and therefore clearly documented,
by government officials.
E) Simultaneous and independent discoveries, along with competing claims for
patents, often had inventors going to court over their inventions.