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Worksheets

Radio

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

What does the "AM" in AM radio represent?

a)

American Mode

b)

Atmospheric Music

c)

Amplitude Modulation

d)

Arc Manipulation

2.

When was the first regular AM radio broadcast?(Hint: think sometime between the Wright stuff and the Titanic disaster.)

a)

1903

b)

1909

c)

1954

d)

1912

3.

What is the AM broadcast frequency range?

a)

50 or 60 Hz, depending on the country

b)

88-108 MHz

c)

535-1700 KHz

d)

550-1650 Hz

4.

US AM radio station call signs begin with one of two letters. Which of the below are the correct letters?

a)

N & W

b)

C & O

c)

B & O

d)

W & K

5.

Why do well over half the AM radio stations go off the air or reduce their signal power at night?

a)

save electricity

b)

equipment maintenance

c)

avoid interference with distant stations

d)

operate with a smaller staff

6.

The person who selects and plays music for a radio station is called a DJ or "deejay." What does that term actually stand for?

a)

disc jockey

b)

dirty jobber

c)

disk juggler

d)

dance judge

7.

When your great-grandparents listened to the radio news about the Hindenburg disaster or the Pearl Harbor attack, what component was NOT inside their AM set?

a)

resistor

b)

coil

c)

capacitor

d)

transistor

8.

Old time radios had at LEAST one - and probably more - clear glass tubes filled with "stuff." In the US, these tubes are called "electron tubes" or "vacuum tubes." What do the British and New Zealanders call them?

a)

wave guides

b)

glass thingos

c)

valves

d)

flux capacitors

9.

From about 1953 to 1963, all American-made AM radios had small triangles on the frequency dial at 640 and 1240 Khz. What purpose did these marks serve?

a)

manufacturer's trademarks

b)

technician's calibration marks

c)

popular station locations

d)

civil defense

10.

In the movie "A Christmas Story," Ralphie was a faithful listener of what radio serial adventure?

a)

Red Ryder

b)

Howdy Doody

c)

Sky King

d)

Little Orphan Annie

11.

What were the call letters of the first commercial radio station?

a)

WNBC

b)

WOR

c)

KDKA

d)

KQV

12.

Who invented the FM band?

a)

Edwin Howard Armstrong

b)

Moe Howard

c)

Howard Stern

d)

Robert Sarnoff

13.

The term 'broadcasting' comes from which industry?

a)

shipping

b)

agriculture

c)

railroad

d)

steel

14.

How long is an AM wave?

a)

as long as a breadbox

b)

as long as your fist

c)

as long as a football field

d)

as long as an automobile

15.

How far does an FM radio wave travel

a)

to the next block

b)

line of sight (horizon)

c)

to the ionosphere

d)

until the ocean

16.

What type of radiation are radio waves considered to be?

a)

Electromagnetic radiation

b)

gamma rays

c)

Short wave radiation

d)

microwaves

17.

What topic was discussed on the first commercial radio broadcast?

a)

The election results for 1920

b)

The Hindenburg Disaster

c)

The invaders from Mars

d)

The Stock Market Crash of 1929

18.

At the turn of the 21st century, the term "radio" was dominant. At the turn of the 20th century, however, there were many different descriptions given to the signaling and audio communication using electromagnetic radiation systems. Which was NOT one of these early names?

a)

aerography

b)

mobile telegraphy

c)

wireless

d)

ether waves

19.

What invention really invigorated the development of audio (that is, voice and other sound) radio transmission in the early 20th century?

a)

transistors

b)

vacuum-tube transmitters

c)

batteries

d)

alternating current

20.

Using Guglielmo Marconi's longwave signals, many passenger liners and other ships on the high seas adopted radio, or wireless telegraphy. SOS eventually became the universal distress signal in Morse code; what was used by (British) Marconi Wireless operators before that?

a)

CQD

b)

BLUE

c)

HELP

d)

MayDay