Free practice on Telecommunications for Class 4, following the Cameroon primary school curriculum (English subsystem). Every answer is explained, so a parent who is not sure of the answer can still help.
A telephone lets two people communicate through voice over a distance. A television receives broadcast signals and turns them into pictures and sound.
| Device | How it works |
|---|---|
| Telephone | Sends voice over distance |
| Television | Turns signals into pictures and sound |
Using telecommunication devices responsibly means not disturbing others and using them for good purposes, not to spread lies or damage them on purpose.
A telephone allows two people to communicate mainly through:
Answer: C. voice over a distance
A television mainly operates by receiving:
Answer: D. broadcast signals turned into pictures and sound
Producing a miniature (small model) telephone in class helps pupils to:
Answer: A. understand how real telecommunication tools work
Using telecommunication devices responsibly means:
Answer: B. not disturbing others and using them for good purposes
Which of these best describes how a radio works?
Answer: C. It receives broadcast signals and turns them into sound
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