Soil Moisture Sensors Quiz | OceanRemote Education

1 What is the ideal soil moisture range for most vegetables?

A) 20-30% B) 60-80% C) 90-100% D) 0-10%

2 Which type of soil moisture sensor lasts longer and doesn't corrode?

A) Resistive B) Capacitive C) Both equally D) Neither

3 What happens when soil moisture drops below 30%?

A) Plants grow faster B) Plants experience water stress C) Nothing changes D) Soil becomes more fertile

4 How often should you calibrate your soil moisture sensor?

A) Never B) Daily C) Once at installation, then occasionally D) Every hour

5 What is the typical cost of a basic soil moisture sensor?

A) $1-2 B) $5-10 C) $50-100 D) $200+

6 Which pin on ESP32 reads analog soil moisture sensors?

A) Any digital pin B) ADC pins (GPIO32-39) C) Only pin 13 D) Power pins

7 Why does sandy soil need more frequent watering than clay soil?

A) Sandy soil drains faster B) Sand repels water C) Clay holds less water D) Sandy soil is deeper