1Do radio, television, telephone, fax, mobile phone, Wi-Fi, email, the internet and GPS all come under telecommunication technology? Why?
2What is telecommunication? Give four examples.
3Explain the working principle of telecommunication using its three parts.
4Why is modulation needed in telecommunication?
5What are a carrier wave and demodulation?
6Write four differences between amplitude modulation and frequency modulation.
7Why is AM radio heard more clearly at night than in the day?
8Why does FM radio reach only a limited distance?
9How does a voice in a radio station reach the broadcasting antenna?
10How do communication satellites help with long distance communication?