Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 18 · 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 5 minutes. How many readings arrive in 2 hours?
2. 2.What does the actuator do? (a) stores data online (b) measures the real world (c) acts on a command (d) shows data to you
3. 3.Which of these is an IoT device? (a) an app-controlled bulb (b) a plain wall switch (c) a battery torch (d) a plain table fan
4. 4.Which of these is an IoT device? (a) a wind-up clock (b) a paper calendar (c) a pencil sharpener (d) a Wi-Fi doorbell camera
5. 5.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 4 hours?
6. 6.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 9 minutes?
7. 7.Which of these is not an IoT device? (a) a battery torch (b) a Wi-Fi weather station (c) an app-controlled bulb (d) a Wi-Fi smart plug
8. 8.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 160 readings take?
9. 9.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the sensor measures”? (a) the sensor measures (b) the app shows it
10. 10.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 70 readings take?
11. 11.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the board reads it”? (a) the sensor measures (b) the board reads it
12. 12.🌐 What does IoT stand for? (a) Internet of Talk (b) Internet of Things (c) Inside of Toys (d) Input of Tools
13. 13.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
14. 14.Which of these is an IoT device? (a) a plain wall switch (b) a plain table fan (c) a pencil sharpener (d) a Wi-Fi smart plug
15. 15.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a fitness band with app (c) an app-controlled bulb (d) a pencil sharpener
16. 16.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a pencil sharpener (c) a fitness band with app (d) an app-controlled bulb
17. 17.🌐 In an IoT system, which part shows data to you? (a) microcontroller (b) phone app (c) cloud server (d) sensor
18. 18.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
19. 19.Which of these is an IoT device? (a) a wind-up clock (b) a Wi-Fi weather station (c) a battery torch (d) a paper calendar
20. 20.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 20 readings take?
21. 21.What does the sensor do? (a) measures the real world (b) shows data to you (c) stores data online (d) carries the data
22. 22.🔍 Which is the odd one out? (a) a paper calendar (b) an app-controlled bulb (c) a wind-up clock (d) a pencil sharpener
23. 23.🌐 In an IoT system, which part stores data online? (a) sensor (b) Wi-Fi (c) cloud server (d) microcontroller
24. 24.What does the phone app do? (a) reads values, decides (b) shows data to you (c) acts on a command (d) carries the data
25. 25.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 1 minute?
26. 26.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 190 readings take?
27. 27.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 8 minutes?
28. 28.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?
29. 29.What does the Wi-Fi link do? (a) acts on a command (b) carries the data (c) reads values, decides (d) stores data online
30. 30.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the cloud stores it (b) the app shows it (c) the board reads it (d) it is sent by Wi-Fi
31. 31.🌐 In an IoT system, which part carries the data? (a) phone app (b) actuator (c) Wi-Fi (d) cloud server
32. 32.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the app shows it (b) the sensor measures (c) it is sent by Wi-Fi (d) the board reads it
33. 33.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a plain wall switch (d) a Wi-Fi weather station
34. 34.🔍 Which is the odd one out? (a) a smart energy meter (b) a battery torch (c) an app-controlled bulb (d) a fitness band with app
35. 35.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the sensor measures
36. 36.🌐 In an IoT system, which part acts on a command? (a) sensor (b) cloud server (c) phone app (d) actuator
37. 37.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the app shows it”? (a) the app shows it (b) it is sent by Wi-Fi
38. 38.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 2 minutes?
39. 39.🔢 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
40. 40.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device

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