| 1 | The signal is sent to the tower containing visual and audio information. |
|---|---|
| 2 | The high-powered broadcast tower transmits a high frequency electromagnetic wave which is modulated by the signal containing the audio and visual information. |
| 3 | Numerous low powered receivers are tuned to pick-up the high frequency wave |
| 4 | The demodulator is used to retrieve the signal containing the visual and audio information. |
Correct: Excellent. That is how radios and televisions communicate with us.
Incorrect: You can try it again if you like.