Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 820 · 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.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 2 hours?
2. 2.Which of these is an IoT device? (a) a plain table fan (b) a plain wall switch (c) an app-controlled bulb (d) a wind-up clock
3. 3.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
4. 4.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a Wi-Fi smart plug (c) a smart energy meter (d) a plain wall switch
5. 5.🌐 In an IoT system, which part carries the data? (a) actuator (b) microcontroller (c) cloud server (d) Wi-Fi
6. 6.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
7. 7.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 10 minutes?
8. 8.🏠 Which is a smart-home example? (a) a candle in a jar (b) a printed map (c) lights on from an app (d) a hand fan
9. 9.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) by post (c) through a candle (d) over Wi-Fi
10. 10.🔍 Which is the odd one out? (a) a plain wall switch (b) a plain table fan (c) a Wi-Fi weather station (d) a paper calendar
11. 11.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the board reads it
12. 12.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
13. 13.🌐 In an IoT system, which part acts on a command? (a) actuator (b) cloud server (c) phone app (d) microcontroller
14. 14.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 2 hours?
15. 15.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 160 readings take?
16. 16.What does the actuator do? (a) reads values, decides (b) measures the real world (c) acts on a command (d) carries the data
17. 17.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the board reads it”? (a) it is sent by Wi-Fi (b) the board reads it
18. 18.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
19. 19.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 80 readings take?
20. 20.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
21. 21.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the board reads it (b) the sensor measures (c) the cloud stores it (d) the app shows it
22. 22.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 110 readings take?
23. 23.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) actuator (c) Wi-Fi (d) microcontroller
24. 24.🌐 In an IoT system, which part stores data online? (a) cloud server (b) sensor (c) microcontroller (d) Wi-Fi
25. 25.Which of these is not an IoT device? (a) an app-controlled bulb (b) a battery torch (c) a Wi-Fi doorbell camera (d) a Wi-Fi smart plug
26. 26.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
27. 27.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the sensor measures”? (a) the sensor measures (b) it is sent by Wi-Fi
28. 28.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) cloud server (c) sensor (d) phone app
29. 29.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 40 readings take?
30. 30.What does the cloud server do? (a) stores data online (b) carries the data (c) acts on a command (d) shows data to you
31. 31.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?
32. 32.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
33. 33.🌐 What does IoT stand for? (a) Internet of Things (b) Internet of Talk (c) Inside of Toys (d) Input of Tools
34. 34.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the cloud stores it (b) it is sent by Wi-Fi (c) the app shows it (d) the sensor measures
35. 35.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
36. 36.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 10 minutes?
37. 37.🔍 Which is the odd one out? (a) a plain table fan (b) a pencil sharpener (c) a battery torch (d) a smart energy meter
38. 38.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi weather station (c) a plain table fan (d) a Wi-Fi smart plug
39. 39.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the app shows it (b) it is sent by Wi-Fi (c) the board reads it (d) the cloud stores it
40. 40.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 110 readings take?

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