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Based on the video, this line of code establishes serial communication between the arduino board and arduino software.

• Serial.init(9600);

• Serial.begin(9000);

• Serial.begin(9600);

• Serial.println(9600);

In the video, the line of code used to write Hello World! in the serial communication is Serial.println("Hello World!");  Write the complete line of code if you have to write Welcome STEM!

• Serial.println("Welcome STEM!");

  
  

• Serial.println("Welcome STEM");

  
  

• Serial.println("Welcome");

  Serial.println("STEM!");

• Serialprintln("Welcome STEM!");

The video teaches that if you need the same endless display of text, write the line of code within the function ____________.

• setup loop()

• void setup()

• loop setup()

• void loop()

The video presented a sensor that measures distance using sound waves. What is it?

• SOUND SENSOR

• SONIC SENSOR

• ULTRASONIC SENSOR

• ULTRASOUND SENSOR

In the video, this sensor is used to indicate the presence or absence of light, or to measure the light intensity.

• Light Emitting Diode

• Photoresistor

• Intensity Sensor

• Light Independent Resistor

The video explained that this sensor uses two probes that allow the electric current to pass through the soil and measures according to its resistance.

The video states that when the Water Level Sensor is immersed in more water, ______________.

• the higher the resistance is.

• the lesser the conductivity.

• the higher output voltage the sensor produces.

• the lower output voltage the sensor produces.

In the video, the sound sensor module consists of a sensitive capacitance ________________ for detecting sound and an amplifier circuit.

• trigger

• sound bar

• module

• microphone

In the sound module, the sensitivity threshold can be adjusted via the ___________ on the sensor.

• resistor

• voltmeter

• potentiometer

• ohmmeter

Based on the video, the lowest concentration the Gas Sensor can detect is ___________ .