Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 160 · 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 weather station sends one reading every 15 seconds. How many readings does it send in 1 minute?
2. 2.🌐 In an IoT system, which part carries the data? (a) phone app (b) sensor (c) Wi-Fi (d) microcontroller
3. 3.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) through a candle (c) by shouting (d) by post
4. 4.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
5. 5.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 120 readings take?
6. 6.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the sensor measures (b) the app shows it (c) the cloud stores it (d) it is sent by Wi-Fi
7. 7.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the cloud stores it (b) the app shows it (c) the sensor measures (d) it is sent by Wi-Fi
8. 8.🌐 What does IoT stand for? (a) Input of Tools (b) Inside of Toys (c) Internet of Talk (d) Internet of Things
9. 9.🌐 In an IoT system, which part reads values, decides? (a) sensor (b) Wi-Fi (c) actuator (d) microcontroller
10. 10.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
11. 11.🏠 Which is a smart-home example? (a) lights on from an app (b) a candle in a jar (c) a printed map (d) a hand fan
12. 12.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
13. 13.Which of these is an IoT device? (a) a battery torch (b) an app-controlled bulb (c) a plain table fan (d) a plain wall switch
14. 14.What does the phone app do? (a) acts on a command (b) reads values, decides (c) measures the real world (d) shows data to you
15. 15.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 140 readings take?
16. 16.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the sensor measures”? (a) the sensor measures (b) it is sent by Wi-Fi
17. 17.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi weather station (c) an app-controlled bulb (d) a paper calendar
18. 18.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 70 readings take?
19. 19.🔍 Which is the odd one out? (a) a paper calendar (b) a wind-up clock (c) a pencil sharpener (d) a fitness band with app
20. 20.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 2 minutes?
21. 21.What does the Wi-Fi link do? (a) acts on a command (b) measures the real world (c) carries the data (d) shows data to you
22. 22.What does the cloud server do? (a) reads values, decides (b) measures the real world (c) shows data to you (d) stores data online
23. 23.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 4 minutes?
24. 24.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 200 readings take?
25. 25.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a Wi-Fi smart plug (c) a smart energy meter (d) a pencil sharpener
26. 26.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 20 readings take?
27. 27.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the sensor measures”? (a) the sensor measures (b) the board reads it
28. 28.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the board reads it (b) the app shows it (c) the sensor measures (d) the cloud stores it
29. 29.What does the sensor do? (a) acts on a command (b) carries the data (c) reads values, decides (d) measures the real world
30. 30.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a wind-up clock (c) a Wi-Fi doorbell camera (d) a smart energy meter
31. 31.Which of these is an IoT device? (a) a pencil sharpener (b) a wind-up clock (c) a Wi-Fi doorbell camera (d) a paper calendar
32. 32.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 1 hour?
33. 33.🌐 In an IoT system, which part measures the real world? (a) actuator (b) sensor (c) Wi-Fi (d) microcontroller
34. 34.🔢 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
35. 35.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?
36. 36.What does the actuator do? (a) acts on a command (b) measures the real world (c) carries the data (d) stores data online
37. 37.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
38. 38.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 20 readings take?
39. 39.🌐 In an IoT system, which part shows data to you? (a) phone app (b) Wi-Fi (c) sensor (d) cloud server
40. 40.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 4 minutes?

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