Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 95 · 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 190 readings take?
2. 2.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a fitness band with app (c) a Wi-Fi doorbell camera (d) a wind-up clock
3. 3.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the cloud stores it (b) the app shows it (c) the sensor measures (d) the board reads it
4. 4.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
5. 5.🔢 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 cloud stores it (d) the app shows it
6. 6.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 3 minutes?
7. 7.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
8. 8.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
9. 9.🔍 Which is the odd one out? (a) a paper calendar (b) a battery torch (c) an app-controlled bulb (d) a pencil sharpener
10. 10.Which of these is an IoT device? (a) a fitness band with app (b) a paper calendar (c) a plain table fan (d) a plain wall switch
11. 11.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
12. 12.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
13. 13.Which of these is an IoT device? (a) a Wi-Fi smart plug (b) a plain table fan (c) a plain wall switch (d) a pencil sharpener
14. 14.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 170 readings take?
15. 15.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
16. 16.🌐 In an IoT system, which part carries the data? (a) sensor (b) microcontroller (c) phone app (d) Wi-Fi
17. 17.🏠 Which is a smart-home example? (a) lights on from an app (b) a hand fan (c) a candle in a jar (d) a printed map
18. 18.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
19. 19.What does the actuator do? (a) carries the data (b) acts on a command (c) stores data online (d) shows data to you
20. 20.🔢 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
21. 21.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi doorbell camera (c) a Wi-Fi smart plug (d) a paper calendar
22. 22.🌐 What does IoT stand for? (a) Internet of Talk (b) Internet of Things (c) Inside of Toys (d) Input of Tools
23. 23.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) it is sent by Wi-Fi (c) the sensor measures (d) the app shows it
24. 24.What does the sensor do? (a) measures the real world (b) shows data to you (c) reads values, decides (d) stores data online
25. 25.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 7 minutes?
26. 26.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
27. 27.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 9 minutes?
28. 28.🔍 Which is the odd one out? (a) a plain table fan (b) a Wi-Fi doorbell camera (c) a Wi-Fi weather station (d) a smart energy meter
29. 29.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the app shows it”? (a) it is sent by Wi-Fi (b) the app shows it
30. 30.What does the phone app do? (a) stores data online (b) reads values, decides (c) acts on a command (d) shows data to you
31. 31.🌐 In an IoT system, which part reads values, decides? (a) phone app (b) microcontroller (c) sensor (d) actuator
32. 32.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a pencil sharpener (c) a Wi-Fi smart plug (d) an app-controlled bulb
33. 33.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 120 readings take?
34. 34.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the app shows it (b) the cloud stores it (c) it is sent by Wi-Fi (d) the sensor measures
35. 35.🌐 In an IoT system, which part acts on a command? (a) cloud server (b) sensor (c) Wi-Fi (d) actuator
36. 36.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 140 readings take?
37. 37.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
38. 38.Which of these is an IoT device? (a) a plain wall switch (b) a wind-up clock (c) a Wi-Fi doorbell camera (d) a paper calendar
39. 39.🔢 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 sensor measures (d) the app shows it
40. 40.🌐 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

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