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Electronics Worksheet: If Else with Sensors

Electronics lesson 24: If / else with sensors · Set 126 · 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 > 38) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 19 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  2. 2.🤖 if (temperature > 36) { show “Hot” } else if (temperature > 23) { show “Warm” } else { show “Cool” }
    The temperature is 16 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  3. 3.🤖 if (light < 400) { lamp ON } else { lamp OFF }
    The light sensor reads 315. What happens?     (a) lamp OFF (b) lamp ON
  4. 4.🤖 “if (A AND B)” is true when … (a) both A and B are true (b) both are false (c) only B is true (d) only A is true
  5. 5.🤖 if (temperature > 31) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 43 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  6. 6.🤖 In “if (temp > 30)”, what runs when temp is exactly 30? (a) the else part (b) neither part (c) the if part (d) both parts
  7. 7.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 34 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  8. 8.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 130 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  9. 9.🤖 if (light < 200) { lamp ON } else { lamp OFF }
    The light sensor reads 150. What happens?     (a) lamp ON (b) lamp OFF
  10. 10.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 440 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  11. 11.🤖 if (temperature > 36) { show “Hot” } else if (temperature > 18) { show “Warm” } else { show “Cool” }
    The temperature is 42 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  12. 12.🤖 if (moisture < 40) { pump ON } else { pump OFF }
    The soil moisture sensor reads 40 %. What happens?     (a) pump OFF (b) pump ON
  13. 13.🤖 if (temperature > 37) { show “Hot” } else if (temperature > 19) { show “Warm” } else { show “Cool” }
    The temperature is 10 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  14. 14.🤖 if (light < 500) { lamp ON } else { lamp OFF }
    The light sensor reads 410. What happens?     (a) lamp ON (b) lamp OFF
  15. 15.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 19) { show “Warm” } else { show “Cool” }
    The temperature is 30 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  16. 16.🤖 if (light < 400 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 210 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  17. 17.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 300 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  18. 18.🤖 if (light < 300) { lamp ON } else { lamp OFF }
    The light sensor reads 200. What happens?     (a) lamp OFF (b) lamp ON
  19. 19.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 620 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  20. 20.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 20) { show “Warm” } else { show “Cool” }
    The temperature is 26 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  21. 21.🤖 if (moisture < 40) { pump ON } else { pump OFF }
    The soil moisture sensor reads 59 %. What happens?     (a) pump OFF (b) pump ON
  22. 22.🤖 if (temperature > 34) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 21 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  23. 23.🤖 if (light < 300) { lamp ON } else { lamp OFF }
    The light sensor reads 154. What happens?     (a) lamp OFF (b) lamp ON
  24. 24.🤖 if (distance < 10) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 18 cm. What happens?     (a) buzzer beeps (b) buzzer is silent
  25. 25.🤖 if (light < 400 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 360 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  26. 26.🤖 if (temperature > 33) { show “Hot” } else if (temperature > 23) { show “Warm” } else { show “Cool” }
    The temperature is 30 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  27. 27.🤖 if (temperature > 28) { fan ON } else { fan OFF }
    The temperature sensor reads 23 °C. What happens?     (a) fan OFF (b) fan ON
  28. 28.🤖 if (moisture < 50) { pump ON } else { pump OFF }
    The soil moisture sensor reads 60 %. What happens?     (a) pump ON (b) pump OFF
  29. 29.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 180 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  30. 30.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 160 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  31. 31.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 480 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  32. 32.🤖 if (distance < 20) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 29 cm. What happens?     (a) buzzer is silent (b) buzzer beeps
  33. 33.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 270 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  34. 34.🤖 if (temperature > 35) { show “Hot” } else if (temperature > 24) { show “Warm” } else { show “Cool” }
    The temperature is 30 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  35. 35.🤖 if (distance < 30) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 22 cm. What happens?     (a) buzzer is silent (b) buzzer beeps
  36. 36.🤖 if (temperature > 37) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 45 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  37. 37.🤖 if (light < 200) { lamp ON } else { lamp OFF }
    The light sensor reads 68. What happens?     (a) lamp ON (b) lamp OFF
  38. 38.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 120 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  39. 39.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 140 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  40. 40.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 260 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON

Answer key

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

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