Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 252 · 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 20 seconds. How many readings does it send in 7 minutes?
2. 2.What does the sensor do? (a) shows data to you (b) stores data online (c) measures the real world (d) acts on a command
3. 3.🏠 Which is a smart-home example? (a) lights on from an app (b) a printed map (c) a hand fan (d) a candle in a jar
4. 4.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 9 minutes?
5. 5.What does the cloud server do? (a) acts on a command (b) reads values, decides (c) stores data online (d) measures the real world
6. 6.Which of these is an IoT device? (a) a Wi-Fi smart plug (b) a battery torch (c) a paper calendar (d) a wind-up clock
7. 7.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the sensor measures (b) the board reads it (c) it is sent by Wi-Fi (d) the app shows it
8. 8.🌐 What does IoT stand for? (a) Input of Tools (b) Inside of Toys (c) Internet of Talk (d) Internet of Things
9. 9.🌐 In an IoT system, which part acts on a command? (a) actuator (b) Wi-Fi (c) sensor (d) microcontroller
10. 10.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) through a candle (c) by shouting (d) by post
11. 11.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 140 readings take?
12. 12.🌐 In an IoT system, which part carries the data? (a) cloud server (b) sensor (c) actuator (d) Wi-Fi
13. 13.Which of these is not an IoT device? (a) a plain wall switch (b) a fitness band with app (c) a Wi-Fi smart plug (d) a Wi-Fi weather station
14. 14.What does the phone app do? (a) shows data to you (b) reads values, decides (c) stores data online (d) measures the real world
15. 15.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 200 readings take?
16. 16.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a plain table fan (c) a smart energy meter (d) a Wi-Fi smart plug
17. 17.🔍 Which is the odd one out? (a) a battery torch (b) a Wi-Fi smart plug (c) a paper calendar (d) a plain table fan
18. 18.🌐 In an IoT system, which part stores data online? (a) sensor (b) actuator (c) cloud server (d) Wi-Fi
19. 19.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
20. 20.🔍 Which is the odd one out? (a) a pencil sharpener (b) a plain wall switch (c) a smart energy meter (d) a battery torch
21. 21.What does the actuator do? (a) stores data online (b) carries the data (c) acts on a command (d) shows data to you
22. 22.What does the microcontroller do? (a) measures the real world (b) stores data online (c) reads values, decides (d) acts on a command
23. 23.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
24. 24.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
25. 25.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 90 readings take?
26. 26.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the app shows it (c) the sensor measures (d) the board reads it
27. 27.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 6 hours?
28. 28.Which of these is not an IoT device? (a) an app-controlled bulb (b) a battery torch (c) a Wi-Fi weather station (d) a smart energy meter
29. 29.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 6 minutes?
30. 30.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 2 minutes?
31. 31.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 2 hours?
32. 32.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 2 minutes?
33. 33.🌐 In an IoT system, which part shows data to you? (a) sensor (b) Wi-Fi (c) phone app (d) microcontroller
34. 34.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
35. 35.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
36. 36.What does the Wi-Fi link do? (a) reads values, decides (b) shows data to you (c) carries the data (d) measures the real world
37. 37.🔍 Which is the odd one out? (a) a paper calendar (b) a smart energy meter (c) a Wi-Fi weather station (d) a Wi-Fi smart plug
38. 38.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 40 readings take?
39. 39.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 6 hours?
40. 40.🔢 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

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