Ultrasonic Sensors

What happens if you decrease the "limit" variable in your code?

• The bot's ultrasonic sensors increase in power

• The bot gets closer to an object before backing away

• The bot travels a set distance

• The bot stays further away from an object before backing away

Why does a single ultrasonic sensor have 2 "eyes" on it?

• So the ultrasonic waves can hit more objects

• So the bot can see differences in color

• One eye sends a signal and one receives it

• In case one eye stops working the other eye is a backup

Ultrasonic waves are a form of _______ waves

• sound

• ocean

• radio

• seismic

What is the maximum speed our bot can go?

• 100

• 15

• 1023

• 255

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

• inches

• feet

• centimeters

• meters

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

• Data types int is real and float is made up

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

• There is no difference

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

How many volts do the ultrasonic sensors need to operate?

• 5v

• 12v

• 3v

• 10v

What can we use to control the speed of our car?

• less batteries

• remote control

• potentiometer

• less sensors

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

• density / echo

• path / seismic

• elevation / sonic

• distance / sound

The speed of sound is _________ m/s

• 100

• 340

• 250

• 255