Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 733 · 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 20 bytes. How many bytes do 180 readings take?
2. 2.🔍 Which is the odd one out? (a) a battery torch (b) a Wi-Fi smart plug (c) a Wi-Fi weather station (d) a Wi-Fi doorbell camera
3. 3.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
4. 4.What does the actuator do? (a) reads values, decides (b) acts on a command (c) carries the data (d) shows data to you
5. 5.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the cloud stores it (b) the board reads it (c) the app shows it (d) the sensor measures
6. 6.What does the phone app do? (a) shows data to you (b) carries the data (c) acts on a command (d) stores data online
7. 7.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) the cloud stores it (c) the board reads it (d) the app shows it
8. 8.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the cloud stores it
9. 9.What does the microcontroller do? (a) shows data to you (b) carries the data (c) measures the real world (d) reads values, decides
10. 10.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?
11. 11.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
12. 12.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 3 minutes?
13. 13.🏠 Which is a smart-home example? (a) a printed map (b) a hand fan (c) a candle in a jar (d) lights on from an app
14. 14.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
15. 15.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) microcontroller (c) Wi-Fi (d) sensor
16. 16.What does the Wi-Fi link do? (a) shows data to you (b) carries the data (c) acts on a command (d) measures the real world
17. 17.🌐 In an IoT system, which part carries the data? (a) Wi-Fi (b) cloud server (c) sensor (d) phone app
18. 18.Which of these is an IoT device? (a) a pencil sharpener (b) a wind-up clock (c) a paper calendar (d) a Wi-Fi smart plug
19. 19.Which of these is an IoT device? (a) a plain table fan (b) a Wi-Fi weather station (c) a paper calendar (d) a battery torch
20. 20.🌐 How does a home IoT device usually send its data to the app? (a) through a candle (b) by post (c) by shouting (d) over Wi-Fi
21. 21.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 6 minutes?
22. 22.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 1 minute?
23. 23.Which of these is not an IoT device? (a) an app-controlled bulb (b) a battery torch (c) a Wi-Fi weather station (d) a Wi-Fi smart plug
24. 24.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 80 readings take?
25. 25.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
26. 26.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 5 hours?
27. 27.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 20 readings take?
28. 28.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
29. 29.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) phone app (c) microcontroller (d) actuator
30. 30.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the board reads it”? (a) the board reads it (b) the sensor measures
31. 31.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) phone app (c) microcontroller (d) Wi-Fi
32. 32.What does the cloud server do? (a) acts on a command (b) carries the data (c) stores data online (d) reads values, decides
33. 33.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 3 minutes?
34. 34.🔍 Which is the odd one out? (a) a plain wall switch (b) a wind-up clock (c) a smart energy meter (d) a plain table fan
35. 35.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a paper calendar (c) a Wi-Fi weather station (d) a Wi-Fi smart plug
36. 36.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 150 readings take?
37. 37.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 7 minutes?
38. 38.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a Wi-Fi weather station (c) a pencil sharpener (d) an app-controlled bulb
39. 39.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 4 hours?
40. 40.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 110 readings take?

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