Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 836 · 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 20 minutes. How many readings arrive in 6 hours?
2. 2.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 20 readings take?
3. 3.🌐 In an IoT system, which part shows data to you? (a) actuator (b) phone app (c) sensor (d) cloud server
4. 4.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the app shows it (b) the board reads it (c) the sensor measures (d) the cloud stores it
5. 5.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) Wi-Fi (c) cloud server (d) actuator
6. 6.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 3 minutes?
7. 7.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a battery torch (c) a plain wall switch (d) a pencil sharpener
8. 8.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) through a candle (c) by post (d) by shouting
9. 9.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
10. 10.Which of these is an IoT device? (a) a pencil sharpener (b) a smart energy meter (c) a wind-up clock (d) a paper calendar
11. 11.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
12. 12.🌐 What does IoT stand for? (a) Inside of Toys (b) Internet of Things (c) Input of Tools (d) Internet of Talk
13. 13.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?
14. 14.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 2 minutes?
15. 15.Which of these is an IoT device? (a) a fitness band with app (b) a pencil sharpener (c) a wind-up clock (d) a plain wall switch
16. 16.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the app shows it (b) the board reads it (c) it is sent by Wi-Fi (d) the cloud stores it
17. 17.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
18. 18.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
19. 19.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a plain table fan (d) a smart energy meter
20. 20.🔍 Which is the odd one out? (a) a fitness band with app (b) a Wi-Fi weather station (c) a wind-up clock (d) a Wi-Fi doorbell camera
21. 21.🌐 In an IoT system, which part stores data online? (a) microcontroller (b) cloud server (c) actuator (d) sensor
22. 22.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
23. 23.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
24. 24.What does the cloud server do? (a) reads values, decides (b) carries the data (c) measures the real world (d) stores data online
25. 25.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 10 minutes?
26. 26.🌐 In an IoT system, which part carries the data? (a) Wi-Fi (b) phone app (c) sensor (d) cloud server
27. 27.🌐 In an IoT system, which part acts on a command? (a) sensor (b) actuator (c) Wi-Fi (d) cloud server
28. 28.What does the sensor do? (a) measures the real world (b) carries the data (c) reads values, decides (d) stores data online
29. 29.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 4 minutes?
30. 30.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “it is sent by Wi-Fi”? (a) the app shows it (b) it is sent by Wi-Fi
31. 31.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the board reads it (b) the app shows it
32. 32.🔍 Which is the odd one out? (a) a plain table fan (b) an app-controlled bulb (c) a battery torch (d) a pencil sharpener
33. 33.🔢 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
34. 34.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
35. 35.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 120 readings take?
36. 36.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) the sensor measures (b) it is sent by Wi-Fi
37. 37.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
38. 38.🏠 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
39. 39.Which of these is an IoT device? (a) a plain wall switch (b) a plain table fan (c) a Wi-Fi doorbell camera (d) a paper calendar
40. 40.🔢 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

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