Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 240 · 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.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) through a candle (c) by post (d) by shouting
2. 2.Which of these is an IoT device? (a) a plain table fan (b) a Wi-Fi smart plug (c) a pencil sharpener (d) a battery torch
3. 3.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 1 minute?
4. 4.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “it is sent by Wi-Fi”? (a) the cloud stores it (b) it is sent by Wi-Fi
5. 5.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a Wi-Fi smart plug (c) a fitness band with app (d) a battery torch
6. 6.What does the phone app do? (a) reads values, decides (b) measures the real world (c) stores data online (d) shows data to you
7. 7.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 170 readings take?
8. 8.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the app shows it
9. 9.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 5 minutes?
10. 10.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the sensor measures”? (a) the sensor measures (b) the app shows it
11. 11.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
12. 12.What does the cloud server do? (a) reads values, decides (b) stores data online (c) measures the real world (d) carries the data
13. 13.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
14. 14.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 80 readings take?
15. 15.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
16. 16.🔍 Which is the odd one out? (a) a wind-up clock (b) a plain wall switch (c) a smart energy meter (d) a battery torch
17. 17.Which of these is not an IoT device? (a) a wind-up clock (b) a smart energy meter (c) a Wi-Fi weather station (d) an app-controlled bulb
18. 18.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 1 hour?
19. 19.🏠 Which is a smart-home example? (a) lights on from an app (b) a hand fan (c) a printed map (d) a candle in a jar
20. 20.What does the actuator do? (a) carries the data (b) stores data online (c) acts on a command (d) shows data to you
21. 21.Which of these is an IoT device? (a) a plain table fan (b) a pencil sharpener (c) an app-controlled bulb (d) a wind-up clock
22. 22.🔢 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 app shows it (c) the sensor measures (d) the cloud stores it
23. 23.What does the microcontroller do? (a) carries the data (b) stores data online (c) reads values, decides (d) measures the real world
24. 24.🔍 Which is the odd one out? (a) a plain table fan (b) a Wi-Fi weather station (c) a battery torch (d) a pencil sharpener
25. 25.🌐 In an IoT system, which part measures the real world? (a) Wi-Fi (b) cloud server (c) actuator (d) sensor
26. 26.🔍 Which is the odd one out? (a) a fitness band with app (b) a smart energy meter (c) a Wi-Fi weather station (d) a pencil sharpener
27. 27.What does the Wi-Fi link do? (a) stores data online (b) reads values, decides (c) carries the data (d) measures the real world
28. 28.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
29. 29.Which of these is an IoT device? (a) a wind-up clock (b) a battery torch (c) a pencil sharpener (d) a smart energy meter
30. 30.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 6 minutes?
31. 31.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
32. 32.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
33. 33.🔍 Which is the odd one out? (a) a plain wall switch (b) a plain table fan (c) a pencil sharpener (d) a Wi-Fi doorbell camera
34. 34.Which of these is an IoT device? (a) a plain wall switch (b) a paper calendar (c) a Wi-Fi weather station (d) a wind-up clock
35. 35.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 2 minutes?
36. 36.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
37. 37.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the cloud stores it (b) the board reads it (c) the app shows it (d) it is sent by Wi-Fi
38. 38.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the app shows it (b) the sensor measures
39. 39.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the app shows it (b) the sensor measures (c) the board reads it (d) it is sent by Wi-Fi
40. 40.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?

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