Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 270 · 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 5 minutes. How many readings arrive in 2 hours?
2. 2.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a battery torch (d) an app-controlled bulb
3. 3.Which of these is an IoT device? (a) a plain wall switch (b) a smart energy meter (c) a pencil sharpener (d) a battery torch
4. 4.What does the sensor do? (a) measures the real world (b) acts on a command (c) stores data online (d) carries the data
5. 5.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 170 readings take?
6. 6.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 9 minutes?
7. 7.🌐 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
8. 8.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
9. 9.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 4 minutes?
10. 10.🌐 In an IoT system, which part shows data to you? (a) cloud server (b) microcontroller (c) phone app (d) actuator
11. 11.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?
12. 12.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 40 readings take?
13. 13.🌐 In an IoT system, which part acts on a command? (a) microcontroller (b) sensor (c) cloud server (d) actuator
14. 14.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a smart energy meter (d) a paper calendar
15. 15.Which of these is not an IoT device? (a) a fitness band with app (b) a plain wall switch (c) a Wi-Fi weather station (d) an app-controlled bulb
16. 16.🏠 Which is a smart-home example? (a) a hand fan (b) lights on from an app (c) a printed map (d) a candle in a jar
17. 17.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the board reads it
18. 18.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
19. 19.What does the microcontroller do? (a) reads values, decides (b) shows data to you (c) measures the real world (d) carries the data
20. 20.What does the phone app do? (a) carries the data (b) shows data to you (c) reads values, decides (d) acts on a command
21. 21.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 5 minutes?
22. 22.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
23. 23.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a smart energy meter (c) a pencil sharpener (d) a Wi-Fi smart plug
24. 24.Which of these is an IoT device? (a) a paper calendar (b) a Wi-Fi weather station (c) a plain table fan (d) a battery torch
25. 25.🌐 What does IoT stand for? (a) Input of Tools (b) Internet of Talk (c) Inside of Toys (d) Internet of Things
26. 26.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 9 minutes?
27. 27.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 3 minutes?
28. 28.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the app shows it”? (a) the app shows it (b) it is sent by Wi-Fi
29. 29.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
30. 30.Which of these is an IoT device? (a) a wind-up clock (b) a battery torch (c) a paper calendar (d) a fitness band with app
31. 31.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
32. 32.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a plain table fan (c) a fitness band with app (d) a Wi-Fi doorbell camera
33. 33.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 70 readings take?
34. 34.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
35. 35.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a smart energy meter (c) a fitness band with app (d) a battery torch
36. 36.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
37. 37.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the cloud stores it (b) the app shows it (c) it is sent by Wi-Fi (d) the board reads it
38. 38.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
39. 39.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 50 readings take?
40. 40.🔍 Which is the odd one out? (a) a wind-up clock (b) a pencil sharpener (c) an app-controlled bulb (d) a battery torch

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