Eureka! Radio

What was the main way that people communicated with those outside their communities before the telegraph and radio were invented?

• traveling to visit people across the world

• they did not communicate with others

• sending letters

• smoke signals

What is the purpose of the telegraph?

• to send coded messages over a wire

• to send sound directly to receivers in people's homes

• to transmit electric without wires

• to broadcast news, music, and other entertainment

Why did the telegraph companies only put up wires in areas with large populations?

• it was too expensive to put up wires everywhere

• the telegraph only worked in cities

• the telegraph could not transmit messages long distances

• the telegraph was only used for government communications

What did Guglielmo Marconi do after the Italian government did not support his wireless invention?

• he gave up on his invention

• he continued to work on it in his attic

• he moved to England to find support

• he started a company to sell his invention

About how long did it take for Marconi to go from building his first machine in the attic to sending a wireless message across the Atlantic Ocean?

• 1 year

• 5 years

• 8 years

• 20 years

What is the main purpose of the first commercial radio stations that began broadcasting in 1920?

• to send telegraph messages wirelessly

• to broadcast news, music, and entertainment

• to control satellites in outer space

• to transmit electricity without wires

How did the radio change how families spent their evenings?

• Families started traveling more

• families stopped communicating with each other

• families gathered to listen to the radio together

• families started watching TV together

What other technologies besides radio use the electromagnetic waves that Marconi first sent across his attic?

• only cell phones

• only radar

• only satellites in outer space

• Cell phones, GPS, radar, TV, and satellites in outer space

What was the main reason that the telegraph was not accessible to m any Americans who lived far from big cities?

• it was too expensive to install everywhere

• it could not transmit messages long distances

• it wa only for government communication

• it required a lot of maintenance

how did the invention of the radio create national celebrities?

• radio performers became superstars

• ladies were in 12 million homes by 1930

• radios allowed families to gather together

• radios controlled satellites in space