Ultrasonic Sensor Quiz

When we print out the ultrasonic sensor data, what units are they in?

• feet

• inches

• meters

• centimeters

What is the main difference between data types "int" and "float"?

• There is no difference

• Data types int can be in decimals and float must be whole numbers

• Data types int must be whole numbers and float can be in decimals

• Data types int is real and float is made up

How many volts do the ultrasonic sensors need to operate?

• 10v

• 12v

• 3v

• 5v

An ultrasonic sensor is a device that can measure the ________ to an object by sending out _________ waves.

• elevation / sonic

• distance / sound

• density / echo

• path / seismic

The speed of sound is _________ m/s

• 340

• 255

• 100

• 250

The original wave is called the _____ wave

• trig

• outbound

• re-cur

• echo

The reflected wave is called the _____ wave

• echo

• return

• trig

• re-curve

Look at the image. The sensor depicted is:

• A LDR sensor

• A passive infrared sensor

• A temperature sensor

• An ultrasonic sensor

Look at the image. The output is:

• servo motor

• LED

• LDR

• Ultrasonic sensor

• Arduino

Look at the image. The input is:

• Passive infrared sensor

• Ultrasonic sensor

• LDR

• LED

• Arduino