WorksheetsNXT UltraSound Sensor
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Why does the Ultrasonic Sensor
have two openings in the front ?
have two openings in the front ?
a)
One
opening is for sending out the sound waves and
One
opening is for receiving the returning sound waves
b)
It is necessary for the robot to see where it is going
c)
A bat has two eyes to see better so the robot needs two eyes as well
2.
Which mammal uses sonar to detect objects in the dark?
a)
Mouse
b)
Dog
c)
Bat
3.
The next sensor that uses sonar to send out sound waves is called the ______.
a)
Touch
b)
Light
c)
Ultrasonic
4.
The light sensor compared what to determine a black line?
a)
Light values
b)
Sound values
c)
Time
5.
The light sensor compared what to determine a black line?
a)
Light values
b)
Sound values
c)
Time
6.
So far in class we have explored the light sensor and sound sensor.
a)
True
b)
False
7.
If you designed a security system which sensor would you use to set off an security system if your car alarm was suddenly activate?
a)
Touch
b)
Light
c)
Sound
8.
What does a radar detector use to calculate speed?
a)
Light Waves
b)
Sound Waves
c)
Sight
9.
For our program we will use a wait for block that will tell the robot to stop when it comes within a set amount of cm, why is this better than a touch sensor?
a)
The robot actually detects an object before running into it.
b)
A touch sensor is better because the robot doesn't have to guess how far away an object is located.
10.
The ultrasound sensor sends out a signal then waits for it to return to determine how far an object is located. What is the word that describes sending out a signal?
a)
Receive
b)
Transmit
c)
Amplify
11.
In our experiment with field of view, we represented the actual measurements on a sheet of paper, this is call a __________?
a)
scale model
b)
2D model
c)
Both
12.
The ultrasonic sensor does not have limit to which it can detect objects?
a)
False
b)
True
13.
The two unit of measurements for detecting objects were which of the following options?
a)
cm and in
b)
mm and in
c)
in and km
14.
Our field of view was not effected by the position of the ultrasonic detector.
a)
True
b)
False
15.
On the NXT brick the menu we used to read measurements of objects in the field of view was which of the following?
a)
Software
b)
Files
c)
View
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