Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 899 · 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 2 hours?
2. 2.🔍 Which is the odd one out? (a) a plain wall switch (b) a fitness band with app (c) a Wi-Fi doorbell camera (d) an app-controlled bulb
3. 3.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the cloud stores it (b) the board reads it (c) the app shows it (d) the sensor measures
4. 4.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
5. 5.What does the actuator do? (a) acts on a command (b) reads values, decides (c) measures the real world (d) shows data to you
6. 6.Which of these is an IoT device? (a) a plain wall switch (b) a Wi-Fi smart plug (c) a wind-up clock (d) a plain table fan
7. 7.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) phone app (c) Wi-Fi (d) actuator
8. 8.What does the sensor do? (a) reads values, decides (b) measures the real world (c) acts on a command (d) shows data to you
9. 9.What does the cloud server do? (a) shows data to you (b) measures the real world (c) stores data online (d) reads values, decides
10. 10.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
11. 11.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
12. 12.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) actuator (c) phone app (d) microcontroller
13. 13.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
14. 14.🔍 Which is the odd one out? (a) a paper calendar (b) a wind-up clock (c) a Wi-Fi weather station (d) a plain table fan
15. 15.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?
16. 16.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the sensor measures (b) the app shows it (c) the cloud stores it (d) it is sent by Wi-Fi
17. 17.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?
18. 18.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
19. 19.🔍 Which is the odd one out? (a) a wind-up clock (b) a fitness band with app (c) a Wi-Fi smart plug (d) a smart energy meter
20. 20.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the sensor measures”? (a) the cloud stores it (b) the sensor measures
21. 21.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the sensor measures
22. 22.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a Wi-Fi weather station (d) a wind-up clock
23. 23.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) actuator (c) phone app (d) sensor
24. 24.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 5 minutes?
25. 25.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
26. 26.🔢 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
27. 27.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 7 minutes?
28. 28.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?
29. 29.🔢 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
30. 30.Which of these is an IoT device? (a) a fitness band with app (b) a plain table fan (c) a paper calendar (d) a plain wall switch
31. 31.Which of these is an IoT device? (a) an app-controlled bulb (b) a paper calendar (c) a plain wall switch (d) a pencil sharpener
32. 32.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a smart energy meter (c) a plain table fan (d) an app-controlled bulb
33. 33.What does the microcontroller do? (a) shows data to you (b) carries the data (c) measures the real world (d) reads values, decides
34. 34.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 110 readings take?
35. 35.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) over Wi-Fi (c) through a candle (d) by shouting
36. 36.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 4 minutes?
37. 37.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 8 minutes?
38. 38.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 8 minutes?
39. 39.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
40. 40.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the board reads it”? (a) the board reads it (b) the sensor measures

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