Which devices have large speaker systems for amplifying sound?

Theaters, concert halls, and event halls

What is the main purpose of a speaker?

To amplify sound for a large group of people

What is the purpose of microphones?

To convert sound waves to electrical signals

What is another use of the microphone and speaker in combination with other sensors of mBot2?

Recording and playing back sounds at specific times

In what kind of appliances can small speaker systems be found?

Televisions, musical instruments, and smartphones

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Listen to mBot 2 Activity

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This is a quiz as a formative assessment for Computer Science Class about mBot 2 using microphone and speaker.

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Questions 20

Answers

1
What other device uses the same principle as a speaker?
Microphone
Event hall
mBot2
Television
2
Which if the following mbot will do when pressing button A?
Start and Stop recording
Play recording
Start recording only
Stop recording only
3
How to move the mbot?
Press Spacebar
Press button A
Press button B
When joystick pulled down
4
What to do to play recording?
When the spacebar is pressed
When button A is pressed
When button B is pressed
When joystick is pulled down
5
Which sensor is not used in this code?
Accelerometer
Sound Sensor
Light Sensor
Ultrasonic
6
Where is the microphone located on the mBot2?
On the side of the CyberPi
On the front of the CyberPi
Behind the CyberPi
On the top left of the CyberPi
7
Which devices have large speaker systems for amplifying sound?
Theaters, concert halls, and event halls
Computers and laptops
Ovens and washing machines
Refrigerators and vacuum cleaners
8
What to do to start recording?
When joystick is pulled down
When button B is pressed
When button A is pressed
When the spacebar is pressed
9
What will happen to mbot if there is object in front nearer than 50 cm?
It will turn right 90 degrees
It will move stop
It will turn right 90 degrees
It will move forward
10
How long will the mbot do the recording?
4 minutes
3 mintues
5 minutes
6 minutes
11
What to do to stop recording?
When button B is pressed
When the spacebar is pressed
When button A is pressed
When joystick is pulled down
12
What sound will play when mbot is moving forward?
it's me
hello
play the recording
hi
13
What sound will play if there is object in front nearer than 50 cm?
hi
play the recording
it's me
hello
14
What is the main purpose of a speaker?
To convert sound waves back to electromagnetic waves
To convert electromagnetic waves into sound waves
To convert sound waves to electrical signals
To amplify sound for a large group of people
15
When will this code runs?
When button B is pressed
When joystick is pulled down
When button A is pressed
When the spacebar is pressed
16
What is the purpose of microphones?
To convert electromagnetic waves into sound waves
To produce sound
To amplify sound for a large group of people
To convert sound waves to electrical signals
17
What is another use of the microphone and speaker in combination with other sensors of mBot2?
Creating a home security system
Playing music from other devices
Generating random sounds
Recording and playing back sounds at specific times
18
Which if the following mbot will do when pressing button B?
Play recording
Stop recording only
Start and Stop recording
Start recording only
19
What will happen to mbot if you press button B?
It will turn right 90 degrees
It will move forward
It will move stop
It will turn right 90 degrees
20
In what kind of appliances can small speaker systems be found?
Microwaves and washing machines
Refrigerators and ovens
Televisions, musical instruments, and smartphones
Vacuum cleaners and blenders

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