Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 321 · 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.🔍 Which is the odd one out? (a) a battery torch (b) an app-controlled bulb (c) a smart energy meter (d) a fitness band with app
2. 2.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
3. 3.What does the sensor do? (a) stores data online (b) measures the real world (c) acts on a command (d) shows data to you
4. 4.🔍 Which is the odd one out? (a) a fitness band with app (b) a paper calendar (c) an app-controlled bulb (d) a Wi-Fi doorbell camera
5. 5.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 6 minutes?
6. 6.🏠 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
7. 7.What does the phone app do? (a) shows data to you (b) reads values, decides (c) measures the real world (d) stores data online
8. 8.Which of these is an IoT device? (a) a wind-up clock (b) a Wi-Fi weather station (c) a plain table fan (d) a plain wall switch
9. 9.🌐 In an IoT system, which part shows data to you? (a) phone app (b) sensor (c) cloud server (d) microcontroller
10. 10.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the sensor measures (b) it is sent by Wi-Fi (c) the app shows it (d) the board reads it
11. 11.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) by post (c) over Wi-Fi (d) through a candle
12. 12.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
13. 13.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “it is sent by Wi-Fi”? (a) the cloud stores it (b) it is sent by Wi-Fi
14. 14.🔍 Which is the odd one out? (a) a fitness band with app (b) a Wi-Fi doorbell camera (c) a Wi-Fi smart plug (d) a pencil sharpener
15. 15.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) cloud server (c) microcontroller (d) Wi-Fi
16. 16.🌐 What does IoT stand for? (a) Internet of Talk (b) Input of Tools (c) Internet of Things (d) Inside of Toys
17. 17.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 140 readings take?
18. 18.What does the actuator do? (a) carries the data (b) reads values, decides (c) acts on a command (d) stores data online
19. 19.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
20. 20.Which of these is not an IoT device? (a) a plain table fan (b) a Wi-Fi doorbell camera (c) a Wi-Fi smart plug (d) a Wi-Fi weather station
21. 21.🌐 In an IoT system, which part carries the data? (a) phone app (b) actuator (c) microcontroller (d) Wi-Fi
22. 22.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 3 minutes?
23. 23.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the app shows it”? (a) the app shows it (b) the board reads it
24. 24.🔢 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
25. 25.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
26. 26.🔍 Which is the odd one out? (a) a wind-up clock (b) a Wi-Fi doorbell camera (c) a smart energy meter (d) a Wi-Fi smart plug
27. 27.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the cloud stores it”? (a) the cloud stores it (b) the board reads it
28. 28.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) sensor (c) actuator (d) cloud server
29. 29.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 4 minutes?
30. 30.🔍 Which is the odd one out? (a) a battery torch (b) a smart energy meter (c) a plain wall switch (d) a pencil sharpener
31. 31.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
32. 32.🔍 Which is the odd one out? (a) a battery torch (b) an app-controlled bulb (c) a plain table fan (d) a wind-up clock
33. 33.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 4 minutes?
34. 34.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
35. 35.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a fitness band with app (c) a smart energy meter (d) a plain table fan
36. 36.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the cloud stores it”? (a) the cloud stores it (b) the app shows it
37. 37.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
38. 38.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 110 readings take?
39. 39.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 100 readings take?
40. 40.Which of these is an IoT device? (a) a battery torch (b) a plain wall switch (c) a Wi-Fi smart plug (d) a pencil sharpener

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