Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 32 · 40 questions

Remember (Sense, send, store, show): IoT device = an everyday thing that shares data over the internet (usually Wi-Fi and an app). Data flow: sensor → board → Wi-Fi → cloud → app (and commands back to an actuator). Readings sent = total time ÷ time between readings, in the same units.

1. 1.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 20 readings take?
2. 2.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
3. 3.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
4. 4.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) by shouting (c) through a candle (d) over Wi-Fi
5. 5.🌐 In an IoT system, which part acts on a command? (a) sensor (b) phone app (c) actuator (d) microcontroller
6. 6.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 160 readings take?
7. 7.What does the Wi-Fi link do? (a) shows data to you (b) acts on a command (c) measures the real world (d) carries the data
8. 8.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 6 minutes?
9. 9.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
10. 10.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the sensor measures (b) the board reads it (c) it is sent by Wi-Fi (d) the app shows it
11. 11.🏠 Which is a smart-home example? (a) a printed map (b) a candle in a jar (c) a hand fan (d) lights on from an app
12. 12.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 120 readings take?
13. 13.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
14. 14.Which of these is an IoT device? (a) an app-controlled bulb (b) a plain table fan (c) a wind-up clock (d) a plain wall switch
15. 15.Which of these is not an IoT device? (a) a wind-up clock (b) a smart energy meter (c) a Wi-Fi doorbell camera (d) a fitness band with app
16. 16.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
17. 17.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
18. 18.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 40 readings take?
19. 19.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
20. 20.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 2 hours?
21. 21.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the cloud stores it (b) it is sent by Wi-Fi (c) the board reads it (d) the sensor measures
22. 22.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 110 readings take?
23. 23.🌐 In an IoT system, which part shows data to you? (a) cloud server (b) actuator (c) phone app (d) Wi-Fi
24. 24.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
25. 25.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
26. 26.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
27. 27.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a Wi-Fi smart plug (c) a pencil sharpener (d) an app-controlled bulb
28. 28.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the sensor measures”? (a) the sensor measures (b) the board reads it
29. 29.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
30. 30.Which of these is an IoT device? (a) a plain wall switch (b) a Wi-Fi weather station (c) a battery torch (d) a wind-up clock
31. 31.Which of these is an IoT device? (a) a plain table fan (b) a paper calendar (c) a pencil sharpener (d) a smart energy meter
32. 32.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 130 readings take?
33. 33.🔍 Which is the odd one out? (a) a wind-up clock (b) a pencil sharpener (c) an app-controlled bulb (d) a plain wall switch
34. 34.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a battery torch (c) a Wi-Fi smart plug (d) a Wi-Fi doorbell camera
35. 35.What does the sensor do? (a) carries the data (b) reads values, decides (c) measures the real world (d) stores data online
36. 36.🔍 Which is the odd one out? (a) a wind-up clock (b) a fitness band with app (c) an app-controlled bulb (d) a Wi-Fi doorbell camera
37. 37.🔍 Which is the odd one out? (a) a pencil sharpener (b) a wind-up clock (c) a paper calendar (d) a Wi-Fi smart plug
38. 38.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a battery torch (c) a plain table fan (d) a paper calendar
39. 39.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 2 minutes?
40. 40.🔍 Which is the odd one out? (a) a fitness band with app (b) a paper calendar (c) a Wi-Fi weather station (d) a Wi-Fi smart plug

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