Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 445 · 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.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the board reads it”? (a) the cloud stores it (b) the board reads it
2. 2.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
3. 3.🌐 How does a home IoT device usually send its data to the app? (a) through a candle (b) by shouting (c) over Wi-Fi (d) by post
4. 4.🏠 Which is a smart-home example? (a) a printed map (b) lights on from an app (c) a hand fan (d) a candle in a jar
5. 5.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the cloud stores it”? (a) the cloud stores it (b) the sensor measures
6. 6.🔍 Which is the odd one out? (a) a wind-up clock (b) a Wi-Fi weather station (c) a pencil sharpener (d) a paper calendar
7. 7.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
8. 8.Which of these is an IoT device? (a) a Wi-Fi smart plug (b) a plain wall switch (c) a paper calendar (d) a wind-up clock
9. 9.🌐 What does IoT stand for? (a) Input of Tools (b) Internet of Talk (c) Inside of Toys (d) Internet of Things
10. 10.🌐 In an IoT system, which part acts on a command? (a) phone app (b) cloud server (c) actuator (d) microcontroller
11. 11.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
12. 12.What does the actuator do? (a) reads values, decides (b) carries the data (c) acts on a command (d) stores data online
13. 13.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 7 minutes?
14. 14.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?
15. 15.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
16. 16.Which of these is an IoT device? (a) a battery torch (b) a Wi-Fi weather station (c) a plain wall switch (d) a wind-up clock
17. 17.🌐 In an IoT system, which part reads values, decides? (a) sensor (b) actuator (c) Wi-Fi (d) microcontroller
18. 18.🔍 Which is the odd one out? (a) a paper calendar (b) an app-controlled bulb (c) a Wi-Fi doorbell camera (d) a fitness band with app
19. 19.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
20. 20.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) it is sent by Wi-Fi (c) the cloud stores it (d) the app shows it
21. 21.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the board reads it
22. 22.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
23. 23.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 180 readings take?
24. 24.Which of these is an IoT device? (a) a plain table fan (b) a pencil sharpener (c) a paper calendar (d) a smart energy meter
25. 25.🌐 In an IoT system, which part stores data online? (a) cloud server (b) microcontroller (c) sensor (d) Wi-Fi
26. 26.Which of these is not an IoT device? (a) a plain wall switch (b) a fitness band with app (c) a Wi-Fi weather station (d) an app-controlled bulb
27. 27.What does the phone app do? (a) shows data to you (b) acts on a command (c) reads values, decides (d) stores data online
28. 28.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 7 minutes?
29. 29.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 2 minutes?
30. 30.🔍 Which is the odd one out? (a) a battery torch (b) a plain wall switch (c) a pencil sharpener (d) a fitness band with app
31. 31.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
32. 32.What does the cloud server do? (a) reads values, decides (b) acts on a command (c) measures the real world (d) stores data online
33. 33.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
34. 34.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 4 minutes?
35. 35.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 90 readings take?
36. 36.🔍 Which is the odd one out? (a) a plain table fan (b) a paper calendar (c) a wind-up clock (d) a Wi-Fi doorbell camera
37. 37.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the sensor measures (b) the app shows it
38. 38.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 1 hour?
39. 39.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
40. 40.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a fitness band with app (d) a pencil sharpener

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