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Electronics Worksheet: If Else with Sensors

Electronics lesson 24: If / else with sensors · Set 791 · 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.🤖 if (temperature > 35) { show “Hot” } else if (temperature > 23) { show “Warm” } else { show “Cool” }
    The temperature is 17 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  2. 2.🤖 if (moisture < 40) { pump ON } else { pump OFF }
    The soil moisture sensor reads 37 %. What happens?     (a) pump ON (b) pump OFF
  3. 3.🤖 In “if (temp > 30)”, what runs when temp is exactly 30? (a) both parts (b) the if part (c) neither part (d) the else part
  4. 4.🤖 if (temperature > 30) { fan ON } else { fan OFF }
    The temperature sensor reads 25 °C. What happens?     (a) fan ON (b) fan OFF
  5. 5.🤖 if (temperature > 28) { fan ON } else { fan OFF }
    The temperature sensor reads 30 °C. What happens?     (a) fan ON (b) fan OFF
  6. 6.🤖 “if (A AND B)” is true when … (a) both A and B are true (b) only B is true (c) both are false (d) only A is true
  7. 7.🤖 if (sound > 80) { red LED ON } else { green LED ON }
    The sound sensor reads 99. What happens?     (a) green LED ON (b) red LED ON
  8. 8.🤖 if (temperature > 25) { fan ON } else { fan OFF }
    The temperature sensor reads 32 °C. What happens?     (a) fan ON (b) fan OFF
  9. 9.🤖 if (temperature > 34) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 12 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  10. 10.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 80 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  11. 11.🤖 if (temperature > 31) { show “Hot” } else if (temperature > 25) { show “Warm” } else { show “Cool” }
    The temperature is 13 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  12. 12.🤖 if (light < 200 AND 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
  13. 13.🤖 if (temperature > 33) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 34 °C. What is shown?     (a) Hot (b) Warm (c) Cool
  14. 14.🤖 if (distance < 10) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 15 cm. What happens?     (a) buzzer beeps (b) buzzer is silent
  15. 15.🤖 if (temperature > 36) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 29 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  16. 16.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 27 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  17. 17.🤖 if (distance < 15) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 16 cm. What happens?     (a) buzzer is silent (b) buzzer beeps
  18. 18.🤖 if (moisture < 30) { pump ON } else { pump OFF }
    The soil moisture sensor reads 27 %. What happens?     (a) pump OFF (b) pump ON
  19. 19.🤖 if (distance < 10) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 1 cm. What happens?     (a) buzzer is silent (b) buzzer beeps
  20. 20.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 20) { show “Warm” } else { show “Cool” }
    The temperature is 13 °C. What is shown?     (a) Hot (b) Warm (c) Cool
  21. 21.🤖 if (light < 400) { lamp ON } else { lamp OFF }
    The light sensor reads 263. What happens?     (a) lamp OFF (b) lamp ON
  22. 22.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 25) { show “Warm” } else { show “Cool” }
    The temperature is 33 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  23. 23.🤖 if (light < 300 AND 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
  24. 24.🤖 if (light < 200) { lamp ON } else { lamp OFF }
    The light sensor reads 153. What happens?     (a) lamp OFF (b) lamp ON
  25. 25.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 100 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  26. 26.🤖 if (temperature > 33) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 22 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  27. 27.🤖 if (temperature > 36) { show “Hot” } else if (temperature > 21) { show “Warm” } else { show “Cool” }
    The temperature is 12 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  28. 28.🤖 if (sound > 70) { red LED ON } else { green LED ON }
    The sound sensor reads 73. What happens?     (a) green LED ON (b) red LED ON
  29. 29.🤖 if (temperature > 34) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 11 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  30. 30.🤖 if (distance < 10) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 11 cm. What happens?     (a) buzzer beeps (b) buzzer is silent
  31. 31.🤖 if (temperature > 30) { show “Hot” } else if (temperature > 23) { show “Warm” } else { show “Cool” }
    The temperature is 43 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  32. 32.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 130 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  33. 33.🤖 if (sound > 80) { red LED ON } else { green LED ON }
    The sound sensor reads 83. What happens?     (a) red LED ON (b) green LED ON
  34. 34.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 530 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  35. 35.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 530 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  36. 36.🤖 if (temperature > 30) { fan ON } else { fan OFF }
    The temperature sensor reads 31 °C. What happens?     (a) fan OFF (b) fan ON
  37. 37.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 24) { show “Warm” } else { show “Cool” }
    The temperature is 32 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  38. 38.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 230 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  39. 39.🤖 if (temperature > 32) { fan ON } else { fan OFF }
    The temperature sensor reads 24 °C. What happens?     (a) fan OFF (b) fan ON
  40. 40.🤖 if (temperature > 33) { show “Hot” } else if (temperature > 19) { show “Warm” } else { show “Cool” }
    The temperature is 39 °C. What is shown?     (a) Hot (b) Warm (c) Cool

Answer key

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

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