Ultrasonic Range Sensors

Front

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

Back

One eye sends a signal and one receives it

Front

The reflected wave is called the _____ wave

Back

echo

Front

Why might the Ultrasonic sensors be preferred over Touch Sensors for detecting walls and obstacles?

Back

Hitting a wall could damage the wall, hitting a wall could damage the robot, and it is quicker to detect obstacles at a distance.

Front

Which mammal uses sonar to detect objects in the dark?

Back

Bat

Front

You cannot hear ultrasound because it is:

Back

high frequency

Front

The letter a on the image above is represent for .........

Back

Amplitude

Front

The letter b on the image above is represent for .........

Back

Wavelength

Front

How many wavelengths are in the picture above?

Back

3

Front

Based on the picture above, which kind of wave has the greatest frequency? Options: microwave, ultraviolet, infrared, gamma rays

Back

gamma rays

Front

Based on the picture above, which kind of wave has the smallest frequency? Options: microwave, ultraviolet, infrared, gamma rays

Back

microwave