Arduino - Module 4 - Water Level Sensor

What is liquid level detection?

• measuring how much water is inside of a liquid

• measuring the level of liquid in a tank or reservoir

• identifying whether there is liquid located nearby

• measuring how pure water is

Which of the following is where liquid level detection can be used?

• Fish Tanks

• Tanks

• Measuring Rainfall

• Dispensing Soda Cans

Which of the following ways is not a way water levels are determined with a water level sensor?

• Measuring the time and depth of the liquid with a camera

• Measuring the resistance and movement of the liquid

• Measuring the pressure by gravity and distance to the surface

• Measuring the time taken for ultrasonic waves to reflect back

What is pin 1?

• GND

• VCC

• 5V

• S

What is pin 2?

• GND

• VCC

• 5V

• S

What is pin 3?

• GND

• VCC

• 5V

• S

Which of the following statements about connecting the water level sensor pins is false?

• VCC is connected to 5V

• S is connected to an Analog Pin

• VCC is connected to a Digital Pin

• GND is connected to GND

Connect the water level sensor to the Arduino

Answer explanation

What does "int" mean in an Arduino code?

• A variable being stored as a decimal is being defined

• A pin is being defined as a variable

• A constant being stored as an integer is being defined

• A variable being stored as an integer is being defined

What does "const int" mean in an Arduino code?

• A constant being stored as a decimal is being defined

• A pin is being defined as a constant

• A constant being stored as an integer is being defined

• A variable being stored as an integer is being defined