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Electronics Worksheet: If Else with Sensors

Electronics lesson 24: If / else with sensors · Set 790 · 40 questions
TalentJR

Remember (Test, then choose): Put the reading into the condition: true → the if part, false → the else part. > means strictly more and < strictly less; an equal reading makes them false. AND: both true. OR: at least one true. In a chain, the first true condition wins.

NameDateTime takenScore ___ / 40
  1. 1.🤖 In “if (temp > 30)”, what runs when temp is exactly 30? (a) the else part (b) the if part (c) both parts (d) neither part
  2. 2.🤖 if (temperature > 33) { show “Hot” } else if (temperature > 19) { show “Warm” } else { show “Cool” }
    The temperature is 11 °C. What is shown?     (a) Hot (b) Warm (c) Cool
  3. 3.🤖 “if (A AND B)” is true when … (a) only A is true (b) only B is true (c) both are false (d) both A and B are true
  4. 4.🤖 if (temperature > 31) { show “Hot” } else if (temperature > 25) { show “Warm” } else { show “Cool” }
    The temperature is 17 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  5. 5.🤖 if (temperature > 35) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 29 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  6. 6.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 410 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  7. 7.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 18) { show “Warm” } else { show “Cool” }
    The temperature is 35 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  8. 8.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 290 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  9. 9.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 13 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  10. 10.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 380 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  11. 11.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 20) { show “Warm” } else { show “Cool” }
    The temperature is 11 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  12. 12.🤖 if (light < 400 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 50 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  13. 13.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 21) { show “Warm” } else { show “Cool” }
    The temperature is 17 °C. What is shown?     (a) Hot (b) Warm (c) Cool
  14. 14.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 150 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  15. 15.🤖 if (sound > 60) { red LED ON } else { green LED ON }
    The sound sensor reads 51. What happens?     (a) red LED ON (b) green LED ON
  16. 16.🤖 if (temperature > 33) { show “Hot” } else if (temperature > 25) { show “Warm” } else { show “Cool” }
    The temperature is 11 °C. What is shown?     (a) Hot (b) Warm (c) Cool
  17. 17.🤖 if (light < 500) { lamp ON } else { lamp OFF }
    The light sensor reads 533. What happens?     (a) lamp ON (b) lamp OFF
  18. 18.🤖 if (temperature > 28) { fan ON } else { fan OFF }
    The temperature sensor reads 24 °C. What happens?     (a) fan ON (b) fan OFF
  19. 19.🤖 if (temperature > 30) { fan ON } else { fan OFF }
    The temperature sensor reads 29 °C. What happens?     (a) fan ON (b) fan OFF
  20. 20.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 130 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  21. 21.🤖 if (temperature > 32) { fan ON } else { fan OFF }
    The temperature sensor reads 29 °C. What happens?     (a) fan ON (b) fan OFF
  22. 22.🤖 if (distance < 15) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 10 cm. What happens?     (a) buzzer is silent (b) buzzer beeps
  23. 23.🤖 if (light < 500) { lamp ON } else { lamp OFF }
    The light sensor reads 445. What happens?     (a) lamp OFF (b) lamp ON
  24. 24.🤖 if (temperature > 30) { show “Hot” } else if (temperature > 19) { show “Warm” } else { show “Cool” }
    The temperature is 20 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  25. 25.🤖 if (temperature > 30) { fan ON } else { fan OFF }
    The temperature sensor reads 38 °C. What happens?     (a) fan OFF (b) fan ON
  26. 26.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 19) { show “Warm” } else { show “Cool” }
    The temperature is 21 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  27. 27.🤖 if (sound > 60) { red LED ON } else { green LED ON }
    The sound sensor reads 44. What happens?     (a) red LED ON (b) green LED ON
  28. 28.🤖 if (distance < 10) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 6 cm. What happens?     (a) buzzer is silent (b) buzzer beeps
  29. 29.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 110 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  30. 30.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 490 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  31. 31.🤖 if (light < 500) { lamp ON } else { lamp OFF }
    The light sensor reads 364. What happens?     (a) lamp ON (b) lamp OFF
  32. 32.🤖 if (light < 500) { lamp ON } else { lamp OFF }
    The light sensor reads 544. What happens?     (a) lamp ON (b) lamp OFF
  33. 33.🤖 if (moisture < 40) { pump ON } else { pump OFF }
    The soil moisture sensor reads 25 %. What happens?     (a) pump ON (b) pump OFF
  34. 34.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 23 °C. What is shown?     (a) Hot (b) Warm (c) Cool
  35. 35.🤖 if (temperature > 35) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 23 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  36. 36.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 420 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  37. 37.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 370 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  38. 38.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 21) { show “Warm” } else { show “Cool” }
    The temperature is 29 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  39. 39.🤖 if (moisture < 50) { pump ON } else { pump OFF }
    The soil moisture sensor reads 54 %. What happens?     (a) pump ON (b) pump OFF
  40. 40.🤖 if (distance < 10) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 18 cm. What happens?     (a) buzzer is silent (b) buzzer beeps

Answer key

  1. the else part
  2. Cool
  3. both A and B are true
  4. Cool
  5. Warm
  6. porch lamp ON
  7. Warm
  8. porch lamp ON
  9. Cool
  10. porch lamp OFF
  11. Cool
  12. porch lamp ON
  13. Cool
  14. porch lamp ON
  15. green LED ON
  16. Cool
  17. lamp OFF
  18. fan OFF
  19. fan OFF
  20. porch lamp OFF
  21. fan OFF
  22. buzzer beeps
  23. lamp ON
  24. Warm
  25. fan ON
  26. Warm
  27. green LED ON
  28. buzzer beeps
  29. porch lamp ON
  30. porch lamp ON
  31. lamp ON
  32. lamp OFF
  33. pump ON
  34. Cool
  35. Cool
  36. porch lamp OFF
  37. porch lamp ON
  38. Warm
  39. pump OFF
  40. buzzer is silent

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