Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 140 · 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.What does the sensor do? (a) stores data online (b) reads values, decides (c) measures the real world (d) acts on a command
2. 2.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) by shouting (c) over Wi-Fi (d) through a candle
3. 3.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 2 hours?
4. 4.🔍 Which is the odd one out? (a) a pencil sharpener (b) a wind-up clock (c) a paper calendar (d) a Wi-Fi smart plug
5. 5.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a fitness band with app (c) an app-controlled bulb (d) a plain wall switch
6. 6.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 3 minutes?
7. 7.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 190 readings take?
8. 8.Which of these is an IoT device? (a) a plain wall switch (b) a Wi-Fi doorbell camera (c) a plain table fan (d) a paper calendar
9. 9.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 2 minutes?
10. 10.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 5 hours?
11. 11.🔍 Which is the odd one out? (a) a fitness band with app (b) an app-controlled bulb (c) a smart energy meter (d) a paper calendar
12. 12.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 8 minutes?
13. 13.🌐 In an IoT system, which part shows data to you? (a) phone app (b) microcontroller (c) actuator (d) sensor
14. 14.Which of these is not an IoT device? (a) a battery torch (b) an app-controlled bulb (c) a fitness band with app (d) a Wi-Fi doorbell camera
15. 15.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
16. 16.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 80 readings take?
17. 17.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 7 minutes?
18. 18.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 80 readings take?
19. 19.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
20. 20.What does the cloud server do? (a) stores data online (b) measures the real world (c) shows data to you (d) acts on a command
21. 21.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
22. 22.What does the microcontroller do? (a) measures the real world (b) carries the data (c) shows data to you (d) reads values, decides
23. 23.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
24. 24.🔍 Which is the odd one out? (a) a fitness band with app (b) a Wi-Fi smart plug (c) a smart energy meter (d) a battery torch
25. 25.🔢 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
26. 26.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 9 minutes?
27. 27.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 3 minutes?
28. 28.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
29. 29.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
30. 30.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 3 minutes?
31. 31.🏠 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
32. 32.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 5 minutes?
33. 33.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) Wi-Fi (c) sensor (d) microcontroller
34. 34.🔢 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 board reads it (d) the app shows it
35. 35.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 110 readings take?
36. 36.Which of these is an IoT device? (a) a wind-up clock (b) a Wi-Fi smart plug (c) a battery torch (d) a paper calendar
37. 37.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 10 minutes?
38. 38.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
39. 39.Which of these is an IoT device? (a) a plain table fan (b) a smart energy meter (c) a plain wall switch (d) a wind-up clock
40. 40.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 30 readings take?

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