Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 935 · 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 is the LAST step? (a) the sensor measures (b) it is sent by Wi-Fi (c) the board reads it (d) the app shows it
2. 2.🔢 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 app shows it (d) the cloud stores it
3. 3.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 2 hours?
4. 4.🌐 In an IoT system, which part measures the real world? (a) actuator (b) phone app (c) microcontroller (d) sensor
5. 5.🔍 Which is the odd one out? (a) a pencil sharpener (b) a smart energy meter (c) a plain table fan (d) a paper calendar
6. 6.Which of these is an IoT device? (a) a paper calendar (b) a plain wall switch (c) a pencil sharpener (d) an app-controlled bulb
7. 7.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
8. 8.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) phone app (c) microcontroller (d) sensor
9. 9.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
10. 10.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
11. 11.🔍 Which is the odd one out? (a) a smart energy meter (b) a Wi-Fi smart plug (c) a wind-up clock (d) a Wi-Fi doorbell camera
12. 12.🔢 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 cloud stores it (d) the board reads it
13. 13.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 160 readings take?
14. 14.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 2 minutes?
15. 15.🌐 In an IoT system, which part reads values, decides? (a) Wi-Fi (b) sensor (c) microcontroller (d) phone app
16. 16.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
17. 17.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
18. 18.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 8 minutes?
19. 19.What does the Wi-Fi link do? (a) acts on a command (b) shows data to you (c) stores data online (d) carries the data
20. 20.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
21. 21.Which of these is not an IoT device? (a) a paper calendar (b) a Wi-Fi doorbell camera (c) an app-controlled bulb (d) a fitness band with app
22. 22.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 6 hours?
23. 23.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
24. 24.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 4 minutes?
25. 25.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the app shows it (b) the sensor measures (c) it is sent by Wi-Fi (d) the cloud stores it
26. 26.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a paper calendar (d) an app-controlled bulb
27. 27.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
28. 28.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 90 readings take?
29. 29.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 70 readings take?
30. 30.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 90 readings take?
31. 31.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
32. 32.🔢 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
33. 33.What does the phone app do? (a) stores data online (b) measures the real world (c) reads values, decides (d) shows data to you
34. 34.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 7 minutes?
35. 35.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 200 readings take?
36. 36.Which of these is not an IoT device? (a) a battery torch (b) a Wi-Fi smart plug (c) an app-controlled bulb (d) a Wi-Fi doorbell camera
37. 37.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
38. 38.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
39. 39.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) it is sent by Wi-Fi (b) the board reads it (c) the cloud stores it (d) the app shows it
40. 40.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?

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