Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 230 · 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.🔢 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
2. 2.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) through a candle (c) by post (d) over Wi-Fi
3. 3.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a Wi-Fi weather station (d) a paper calendar
4. 4.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 3 minutes?
5. 5.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
6. 6.🔍 Which is the odd one out? (a) a wind-up clock (b) an app-controlled bulb (c) a fitness band with app (d) a Wi-Fi doorbell camera
7. 7.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the cloud stores it (b) it is sent by Wi-Fi (c) the board reads it (d) the app shows it
8. 8.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a Wi-Fi weather station (c) a pencil sharpener (d) a smart energy meter
9. 9.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 6 hours?
10. 10.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a plain table fan (d) a smart energy meter
11. 11.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
12. 12.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
13. 13.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the sensor measures (b) the board reads it (c) it is sent by Wi-Fi (d) the app shows it
14. 14.Which of these is an IoT device? (a) a battery torch (b) a paper calendar (c) a pencil sharpener (d) a Wi-Fi weather station
15. 15.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 40 readings take?
16. 16.🔍 Which is the odd one out? (a) a fitness band with app (b) a plain wall switch (c) a smart energy meter (d) a Wi-Fi smart plug
17. 17.🔍 Which is the odd one out? (a) a pencil sharpener (b) a Wi-Fi smart plug (c) a Wi-Fi doorbell camera (d) a fitness band with app
18. 18.🌐 In an IoT system, which part shows data to you? (a) microcontroller (b) cloud server (c) Wi-Fi (d) phone app
19. 19.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
20. 20.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
21. 21.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
22. 22.🔍 Which is the odd one out? (a) a battery torch (b) a paper calendar (c) an app-controlled bulb (d) a pencil sharpener
23. 23.What does the microcontroller do? (a) measures the real world (b) shows data to you (c) reads values, decides (d) carries the data
24. 24.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
25. 25.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 120 readings take?
26. 26.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 1 minute?
27. 27.🌐 What does IoT stand for? (a) Internet of Talk (b) Inside of Toys (c) Internet of Things (d) Input of Tools
28. 28.🌐 In an IoT system, which part carries the data? (a) microcontroller (b) phone app (c) Wi-Fi (d) actuator
29. 29.What does the sensor do? (a) reads values, decides (b) shows data to you (c) measures the real world (d) stores data online
30. 30.🔢 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
31. 31.What does the actuator do? (a) acts on a command (b) shows data to you (c) reads values, decides (d) measures the real world
32. 32.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
33. 33.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) microcontroller (c) actuator (d) phone app
34. 34.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the cloud stores it (b) the board reads it (c) the sensor measures (d) the app shows it
35. 35.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
36. 36.What does the cloud server do? (a) acts on a command (b) measures the real world (c) stores data online (d) reads values, decides
37. 37.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 smart plug
38. 38.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
39. 39.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) cloud server (c) phone app (d) sensor
40. 40.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?

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