Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 905 · 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 5 seconds. How many readings does it send in 1 minute?
2. 2.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 2 hours?
3. 3.Which of these is not an IoT device? (a) an app-controlled bulb (b) a plain table fan (c) a Wi-Fi smart plug (d) a smart energy meter
4. 4.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
5. 5.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 4 hours?
6. 6.🔍 Which is the odd one out? (a) a pencil sharpener (b) a smart energy meter (c) a plain wall switch (d) a wind-up clock
7. 7.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a pencil sharpener (c) a Wi-Fi weather station (d) a Wi-Fi doorbell camera
8. 8.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 3 minutes?
9. 9.What does the phone app do? (a) measures the real world (b) acts on a command (c) shows data to you (d) carries the data
10. 10.🌐 In an IoT system, which part stores data online? (a) sensor (b) cloud server (c) phone app (d) Wi-Fi
11. 11.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
12. 12.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
13. 13.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
14. 14.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 90 readings take?
15. 15.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) by shouting (c) by post (d) through a candle
16. 16.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a plain table fan (c) a plain wall switch (d) a pencil sharpener
17. 17.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 5 minutes?
18. 18.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
19. 19.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) it is sent by Wi-Fi (b) the sensor measures (c) the cloud stores it (d) the app shows it
20. 20.🔍 Which is the odd one out? (a) a smart energy meter (b) a paper calendar (c) a Wi-Fi doorbell camera (d) a Wi-Fi smart plug
21. 21.Which of these is an IoT device? (a) a pencil sharpener (b) a plain wall switch (c) a wind-up clock (d) a Wi-Fi smart plug
22. 22.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the sensor measures (b) it is sent by Wi-Fi (c) the app shows it (d) the board reads it
23. 23.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a fitness band with app (c) a battery torch (d) an app-controlled bulb
24. 24.What does the sensor do? (a) carries the data (b) stores data online (c) reads values, decides (d) measures the real world
25. 25.🔍 Which is the odd one out? (a) a plain table fan (b) a wind-up clock (c) a Wi-Fi weather station (d) a pencil sharpener
26. 26.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the sensor measures”? (a) it is sent by Wi-Fi (b) the sensor measures
27. 27.🌐 What does IoT stand for? (a) Internet of Talk (b) Inside of Toys (c) Internet of Things (d) Input of Tools
28. 28.What does the actuator do? (a) acts on a command (b) carries the data (c) measures the real world (d) shows data to you
29. 29.🌐 In an IoT system, which part shows data to you? (a) phone app (b) actuator (c) microcontroller (d) sensor
30. 30.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
31. 31.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
32. 32.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
33. 33.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the cloud stores it”? (a) the cloud stores it (b) it is sent by Wi-Fi
34. 34.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a Wi-Fi smart plug (c) a Wi-Fi doorbell camera (d) a plain table fan
35. 35.Which of these is an IoT device? (a) a plain table fan (b) a smart energy meter (c) a plain wall switch (d) a battery torch
36. 36.🏠 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
37. 37.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 7 minutes?
38. 38.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 7 minutes?
39. 39.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 140 readings take?
40. 40.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a plain wall switch (d) a Wi-Fi weather station

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