Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 474 · 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 30 minutes. How many readings arrive in 1 hour?
2. 2.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 140 readings take?
3. 3.🔍 Which is the odd one out? (a) a plain table fan (b) a paper calendar (c) a fitness band with app (d) a battery torch
4. 4.🌐 What does IoT stand for? (a) Inside of Toys (b) Input of Tools (c) Internet of Talk (d) Internet of Things
5. 5.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) over Wi-Fi (c) through a candle (d) by shouting
6. 6.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the sensor measures”? (a) the board reads it (b) the sensor measures
7. 7.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
8. 8.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a wind-up clock (c) a paper calendar (d) a battery torch
9. 9.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
10. 10.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 5 minutes?
11. 11.Which of these is not an IoT device? (a) a fitness band with app (b) a smart energy meter (c) an app-controlled bulb (d) a pencil sharpener
12. 12.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
13. 13.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
14. 14.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
15. 15.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a fitness band with app (c) a Wi-Fi doorbell camera (d) a plain wall switch
16. 16.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the cloud stores it (b) the app shows it (c) the sensor measures (d) the board reads it
17. 17.What does the sensor do? (a) shows data to you (b) measures the real world (c) stores data online (d) acts on a command
18. 18.🔢 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 cloud stores it (d) the sensor measures
19. 19.🔍 Which is the odd one out? (a) a paper calendar (b) a plain table fan (c) a battery torch (d) an app-controlled bulb
20. 20.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 180 readings take?
21. 21.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
22. 22.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
23. 23.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 5 minutes?
24. 24.🏠 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
25. 25.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
26. 26.Which of these is an IoT device? (a) a pencil sharpener (b) a battery torch (c) a Wi-Fi smart plug (d) a plain wall switch
27. 27.🔍 Which is the odd one out? (a) a battery torch (b) a paper calendar (c) a Wi-Fi doorbell camera (d) a plain wall switch
28. 28.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a paper calendar (d) an app-controlled bulb
29. 29.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 140 readings take?
30. 30.Which of these is an IoT device? (a) a battery torch (b) a Wi-Fi doorbell camera (c) a plain wall switch (d) a wind-up clock
31. 31.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) the app shows it (c) it is sent by Wi-Fi (d) the cloud stores it
32. 32.🔍 Which is the odd one out? (a) a smart energy meter (b) a fitness band with app (c) a plain wall switch (d) an app-controlled bulb
33. 33.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) sensor (c) actuator (d) phone app
34. 34.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 2 hours?
35. 35.🌐 In an IoT system, which part shows data to you? (a) phone app (b) sensor (c) actuator (d) microcontroller
36. 36.🌐 In an IoT system, which part reads values, decides? (a) sensor (b) cloud server (c) microcontroller (d) actuator
37. 37.What does the actuator do? (a) measures the real world (b) stores data online (c) acts on a command (d) shows data to you
38. 38.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the sensor measures (c) it is sent by Wi-Fi (d) the app shows it
39. 39.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 2 minutes?
40. 40.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 6 minutes?

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