Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 103 · 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 10 seconds. How many readings does it send in 5 minutes?
2. 2.What does the microcontroller do? (a) measures the real world (b) carries the data (c) stores data online (d) reads values, decides
3. 3.What does the sensor do? (a) acts on a command (b) shows data to you (c) measures the real world (d) stores data online
4. 4.What does the phone app do? (a) measures the real world (b) carries the data (c) reads values, decides (d) shows data to you
5. 5.🏠 Which is a smart-home example? (a) a printed map (b) a hand fan (c) lights on from an app (d) a candle in a jar
6. 6.🌐 In an IoT system, which part carries the data? (a) sensor (b) actuator (c) cloud server (d) Wi-Fi
7. 7.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
8. 8.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 2 hours?
9. 9.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the app shows it (c) the board reads it (d) the cloud stores it
10. 10.🌐 What does IoT stand for? (a) Inside of Toys (b) Internet of Talk (c) Input of Tools (d) Internet of Things
11. 11.🌐 In an IoT system, which part acts on a command? (a) actuator (b) sensor (c) phone app (d) microcontroller
12. 12.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) an app-controlled bulb (c) a paper calendar (d) a fitness band with app
13. 13.🔢 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
14. 14.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) sensor (c) phone app (d) Wi-Fi
15. 15.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
16. 16.🔍 Which is the odd one out? (a) a battery torch (b) a plain table fan (c) a paper calendar (d) a fitness band with app
17. 17.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the app shows it (b) the board reads it (c) the cloud stores it (d) the sensor measures
18. 18.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 7 minutes?
19. 19.🌐 In an IoT system, which part shows data to you? (a) actuator (b) cloud server (c) phone app (d) microcontroller
20. 20.🔍 Which is the odd one out? (a) a plain wall switch (b) a paper calendar (c) a Wi-Fi smart plug (d) a battery torch
21. 21.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) the sensor measures (b) it is sent by Wi-Fi
22. 22.🌐 In an IoT system, which part stores data online? (a) phone app (b) microcontroller (c) cloud server (d) sensor
23. 23.Which of these is an IoT device? (a) a paper calendar (b) a fitness band with app (c) a battery torch (d) a pencil sharpener
24. 24.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
25. 25.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
26. 26.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a wind-up clock (c) a battery torch (d) a plain table fan
27. 27.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
28. 28.What does the actuator do? (a) acts on a command (b) measures the real world (c) carries the data (d) shows data to you
29. 29.Which of these is an IoT device? (a) a paper calendar (b) a Wi-Fi smart plug (c) a plain table fan (d) a plain wall switch
30. 30.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
31. 31.🔍 Which is the odd one out? (a) a paper calendar (b) a Wi-Fi weather station (c) a fitness band with app (d) a smart energy meter
32. 32.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a smart energy meter (c) a plain table fan (d) an app-controlled bulb
33. 33.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 5 minutes?
34. 34.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi weather station (c) a wind-up clock (d) a Wi-Fi doorbell camera
35. 35.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the board reads it (b) it is sent by Wi-Fi (c) the sensor measures (d) the app shows it
36. 36.What does the cloud server do? (a) carries the data (b) acts on a command (c) shows data to you (d) stores data online
37. 37.🌐 How does a home IoT device usually send its data to the app? (a) through a candle (b) over Wi-Fi (c) by post (d) by shouting
38. 38.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 200 readings take?
39. 39.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 80 readings take?
40. 40.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a fitness band with app (d) a pencil sharpener

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