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Questions and Answers
What type of signals replaced most of the analog signals on televisions?
What type of signals replaced most of the analog signals on televisions?
- Sound waves
- Morse code
- Radio waves
- Digital signals (correct)
How is the sound of your voice transmitted from one telephone to another?
How is the sound of your voice transmitted from one telephone to another?
- Sound Waves --> Radio Waves --> Analog Signals --> Sound Waves
- Sound Waves --> Radio Waves --> Digital Signals --> Sound Waves
- Sound Waves --> Digital Signals --> Radio Waves --> Sound Waves (correct)
- Sound Waves --> Analog Signals --> Radio Waves --> Sound Waves
What kind of waves are sent from cell phones to cell phone towers?
What kind of waves are sent from cell phones to cell phone towers?
- Sound waves
- Analog signals
- Radio waves (correct)
- Digital signals
How did astronauts in outer space communicate with people on Earth?
How did astronauts in outer space communicate with people on Earth?
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What did scientists use to make radio wave analog signals powerful enough to transfer information from Earth to outer space?
What did scientists use to make radio wave analog signals powerful enough to transfer information from Earth to outer space?
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