Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 42 · 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 is a smart-home example? (a) a candle in a jar (b) a printed map (c) lights on from an app (d) a hand fan
2. 2.🔍 Which is the odd one out? (a) a plain wall switch (b) a Wi-Fi doorbell camera (c) a pencil sharpener (d) a plain table fan
3. 3.🌐 In an IoT system, which part measures the real world? (a) sensor (b) phone app (c) microcontroller (d) actuator
4. 4.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
5. 5.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 120 readings take?
6. 6.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 190 readings take?
7. 7.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 1 minute?
8. 8.🔢 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 app shows it (c) the board reads it (d) the sensor measures
9. 9.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 200 readings take?
10. 10.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 200 readings take?
11. 11.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 70 readings take?
12. 12.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
13. 13.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 7 minutes?
14. 14.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the cloud stores it (b) the sensor measures (c) the app shows it (d) the board reads it
15. 15.🌐 What does IoT stand for? (a) Input of Tools (b) Internet of Talk (c) Internet of Things (d) Inside of Toys
16. 16.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
17. 17.🔍 Which is the odd one out? (a) a plain wall switch (b) a wind-up clock (c) a Wi-Fi smart plug (d) a plain table fan
18. 18.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) through a candle (c) over Wi-Fi (d) by shouting
19. 19.Which of these is an IoT device? (a) a plain wall switch (b) a wind-up clock (c) a Wi-Fi smart plug (d) a battery torch
20. 20.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi smart plug (c) an app-controlled bulb (d) a plain wall switch
21. 21.🔢 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) it is sent by Wi-Fi (d) the cloud stores it
22. 22.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) sensor (c) microcontroller (d) Wi-Fi
23. 23.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 2 hours?
24. 24.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a pencil sharpener (d) a fitness band with app
25. 25.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 180 readings take?
26. 26.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the app shows it (b) it is sent by Wi-Fi (c) the board reads it (d) the sensor measures
27. 27.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 6 minutes?
28. 28.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
29. 29.🌐 In an IoT system, which part shows data to you? (a) phone app (b) sensor (c) actuator (d) cloud server
30. 30.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
31. 31.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
32. 32.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a battery torch (c) a fitness band with app (d) an app-controlled bulb
33. 33.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 70 readings take?
34. 34.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a fitness band with app (c) a wind-up clock (d) a smart energy meter
35. 35.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
36. 36.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 7 minutes?
37. 37.What does the phone app do? (a) stores data online (b) measures the real world (c) carries the data (d) shows data to you
38. 38.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 6 hours?
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 pencil sharpener (b) a plain wall switch (c) a fitness band with app (d) a plain table fan

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