Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 125 · 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.🌐 In an IoT system, which part stores data online? (a) actuator (b) phone app (c) Wi-Fi (d) cloud server
2. 2.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
3. 3.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) by shouting (c) by post (d) through a candle
4. 4.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
5. 5.Which of these is an IoT device? (a) a Wi-Fi weather station (b) a plain wall switch (c) a plain table fan (d) a pencil sharpener
6. 6.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
7. 7.🌐 What does IoT stand for? (a) Input of Tools (b) Inside of Toys (c) Internet of Talk (d) Internet of Things
8. 8.🏠 Which is a smart-home example? (a) a hand fan (b) a candle in a jar (c) a printed map (d) lights on from an app
9. 9.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
10. 10.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the cloud stores it (b) it is sent by Wi-Fi (c) the sensor measures (d) the board reads it
11. 11.🔢 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 app shows it (d) the sensor measures
12. 12.Which of these is not an IoT device? (a) a wind-up clock (b) a Wi-Fi weather station (c) a Wi-Fi doorbell camera (d) an app-controlled bulb
13. 13.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the sensor measures”? (a) the sensor measures (b) the board reads it
14. 14.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the cloud stores it”? (a) the cloud stores it (b) it is sent by Wi-Fi
15. 15.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
16. 16.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a pencil sharpener (d) a Wi-Fi doorbell camera
17. 17.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the app shows it (b) the board reads it
18. 18.Which of these is an IoT device? (a) a fitness band with app (b) a battery torch (c) a plain wall switch (d) a plain table fan
19. 19.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) phone app (c) cloud server (d) microcontroller
20. 20.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) an app-controlled bulb (c) a Wi-Fi doorbell camera (d) a plain wall switch
21. 21.🔍 Which is the odd one out? (a) a battery torch (b) a pencil sharpener (c) a plain wall switch (d) a Wi-Fi smart plug
22. 22.🌐 In an IoT system, which part acts on a command? (a) actuator (b) sensor (c) Wi-Fi (d) phone app
23. 23.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
24. 24.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
25. 25.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
26. 26.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
27. 27.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 140 readings take?
28. 28.Which of these is an IoT device? (a) a plain table fan (b) a battery torch (c) a Wi-Fi smart plug (d) a plain wall switch
29. 29.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 4 minutes?
30. 30.What does the sensor do? (a) shows data to you (b) reads values, decides (c) measures the real world (d) carries the data
31. 31.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
32. 32.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 150 readings take?
33. 33.What does the phone app do? (a) measures the real world (b) carries the data (c) shows data to you (d) acts on a command
34. 34.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) an app-controlled bulb (c) a paper calendar (d) a Wi-Fi doorbell camera
35. 35.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
36. 36.What does the Wi-Fi link do? (a) reads values, decides (b) carries the data (c) measures the real world (d) acts on a command
37. 37.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 30 readings take?
38. 38.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 5 hours?
39. 39.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) microcontroller (c) sensor (d) phone app
40. 40.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 180 readings take?

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