Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 170 · 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.Which of these is an IoT device? (a) a plain table fan (b) a battery torch (c) a fitness band with app (d) a paper calendar
2. 2.🔍 Which is the odd one out? (a) a plain wall switch (b) a smart energy meter (c) a fitness band with app (d) a Wi-Fi smart plug
3. 3.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 7 minutes?
4. 4.🔍 Which is the odd one out? (a) a battery torch (b) a fitness band with app (c) a plain wall switch (d) a wind-up clock
5. 5.What does the sensor do? (a) acts on a command (b) stores data online (c) reads values, decides (d) measures the real world
6. 6.Which of these is not an IoT device? (a) an app-controlled bulb (b) a smart energy meter (c) a fitness band with app (d) a wind-up clock
7. 7.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 130 readings take?
8. 8.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) over Wi-Fi (c) through a candle (d) by post
9. 9.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 50 readings take?
10. 10.What does the microcontroller do? (a) acts on a command (b) reads values, decides (c) shows data to you (d) stores data online
11. 11.🔢 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
12. 12.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 6 hours?
13. 13.🌐 In an IoT system, which part reads values, decides? (a) sensor (b) microcontroller (c) actuator (d) phone app
14. 14.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
15. 15.🔢 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
16. 16.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 150 readings take?
17. 17.What does the actuator do? (a) acts on a command (b) measures the real world (c) stores data online (d) shows data to you
18. 18.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
19. 19.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
20. 20.🔢 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 cloud stores it (d) the app shows it
21. 21.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
22. 22.🔍 Which is the odd one out? (a) a plain wall switch (b) a wind-up clock (c) a battery torch (d) a Wi-Fi weather station
23. 23.Which of these is not an IoT device? (a) a paper calendar (b) a Wi-Fi smart plug (c) a Wi-Fi doorbell camera (d) an app-controlled bulb
24. 24.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 10 minutes?
25. 25.🔍 Which is the odd one out? (a) a plain wall switch (b) a wind-up clock (c) a Wi-Fi smart plug (d) a battery torch
26. 26.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the board reads it (c) the sensor measures (d) the cloud stores it
27. 27.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) an app-controlled bulb (d) a pencil sharpener
28. 28.🌐 In an IoT system, which part carries the data? (a) cloud server (b) Wi-Fi (c) sensor (d) actuator
29. 29.🌐 In an IoT system, which part stores data online? (a) cloud server (b) phone app (c) Wi-Fi (d) sensor
30. 30.Which of these is an IoT device? (a) an app-controlled bulb (b) a battery torch (c) a plain table fan (d) a plain wall switch
31. 31.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
32. 32.Which of these is an IoT device? (a) a wind-up clock (b) a battery torch (c) a Wi-Fi weather station (d) a plain table fan
33. 33.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
34. 34.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a Wi-Fi smart plug (d) a battery torch
35. 35.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 1 minute?
36. 36.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 5 hours?
37. 37.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 3 minutes?
38. 38.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the sensor measures (b) the app shows it
39. 39.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 1 minute?
40. 40.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 2 minutes?

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