Chapter 3- Block Programming
1. Write the full forms of the following abbreviations
a.
MIT – Massachusetts Institute of Technology
b.
LED – Light Emitting Diode
c.
USB – Universal Serial Bus
d.
IoT – Internet of Things
e.
STEM – Science, Technology, Engineering, and Mathematics
f.
UNO – United Nations Organization
g.
EEPROM – Electrically Erasable Programmable Read-Only Memory
h.
IDE – Integrated Development Environment (or Integrated Drive Electronics,
depending on context)
2.Multiple
Choice questions
a.
Scratch was developed by MIT's Media Lab
i.Microsoft
ii.
Apple
iii.
Google
iv.
MIT's Media Lab
b.
The rectangular area which is present on the right side of the interface and
acts as a background for any project is...
i.stage
ii.
block palette
iii.
sprite header
iv,
variable
c.
Which button is used to run all scripts of the project? c.
i.
red button
ii.
black button
iii.
green flag button
iv.
blue flag button
d.
Which button is used to stop the script.
i.
green flag button
ii.
white flag button
iii.
yellow flag button
iv.
red button
e.
Which block is used to control the movement of sprites?
i.
Looks block
ii.Control
block
iii.
Motion block
iv.
Sensing block
f.
Which block allows the user to control how the characters appear on the stage?
i.
Looks block
ii.
Variable block
iii.
Pen block
iv.
Sensing block
g.
The background image in the stage area is called
i.
background
ii.
wallpaper
iii.
backdrop
iv
design
h.
"ask What's your name? and wait" is an example of.... block
i.
sensing
ii.
control
iii.
operator
iv.
looks
i.
Which is the default sprite of Scratch?
i.
Dog
ii.
Cat
iii.
Mouse
iv.
Bird
j.
Which block is used to make a sprite say something in Scratch?
i.Show
ii.
Speak
iii.
Tell
iv.
Say
k.
How do you delete a block from a script in Scratch?
i.
Drag it to the trash bin
ii.
Right-click and select "Delete"
iii.Press
the Delete key on the keyboard
iv.
All of the above
l.
What does the "if" block in Scratch do?
i.Repeats
a set of actions forever
ii.
Allows sprites to communicate with each other
iii
Checks a condition and performs an action based on the result
iv.
Sets the background image of the project
m.
What is the purpose of a "variable" in Scratch?
i. To display messages on the screen
ii.
To change the appearance of a sprite
iii.
To store and manipulate data in a project
iv.
To repeat a set of actions indefinitely
n.
What is the event that occurs when the green flag is clicked in Scratch?
i.
Start
ii.
Go
iii.
Begin
iv.
End
o.
What are devices like Micro:bit and Arduino used for?
i.
Physical computing
ii.
combining programming with physical devices
iii.
creating interactive projects
iv.
All of the above
p.
Which of the following is an open-source programming tool which wa developed by
arduino.cc?
i.
Scratch
ii.
Arduino IDE
iii.
Python
iv.
Arduino Pdf
3. Write the
technical terms for the following phrases.
i.
The background area for any project on Scratch. Stage
ii.
The platform where the scripts or blocks are assembled. Scripts area
iii.
The blocks that are used to create interactive programs that respond to user input or other events. Event blocks
iv.
A graphic object that can be programmed to move and interact in scratch. Sprite
V.
The name given to the memory location which is used to store value. Variable
vi.
A small, programmable computer embedded on a single integrated circuit. Microcontroller
vii.
The port used to load a program that is written in Arduino IDE onto the Ardui
board. USB port
.
3.
Short Answer Questions
a.
What is block programming? Write its any two advantages.
Block
programming is a type of programming where instructions are given by connecting
visual blocks instead of writing text code.
Advantages:
1.
Easy to learn for beginners.
2.
Reduces syntax errors.
b.
What is scratch?
Scratch
is a block-based visual programming language developed by MIT’s Media Lab for
creating interactive stories, games, and animations.
c.
What is sprite? What is the default sprite of scratch?
A
sprite is a graphic object in Scratch that can be programmed to perform
actions.
The
default sprite is a Cat.
d.
List any four script block of scratch.
.
Four script blocks in Scratch:
Motion block
Looks block
Sound block
Control block
e.
Write the function of Green flag button and Red button in scratch.
Green
flag button: Starts all scripts in the project.
Red button: Stops the running scripts.
f.
Write any four block that are available in motion block.
Four
blocks available in Motion block:
1.
Move 10 steps
2.
Turn clockwise 15 degrees
3.
Go to x: y:
4.
Glide to x: y:
g-Write
the use of Event block in scratch.
Event
blocks are used to trigger scripts to run when specific events occur, like
clicking the green flag or pressing a key.
h.
What is a micro: bit? Give any two applications of micro: bit.
A
micro: bit is a small programmable microcontroller board designed for learning
coding and electronics.
Applications:
1.
Making a digital thermometer.
2.
Creating step counters.
i.
What is Arduino IDE?
Arduino
IDE is an open-source software used to write, compile, and upload programs to
Arduino boards.
4.
Long Answer Question:
a.
Write any four advantages of block programming
Four
advantages of block programming
1.
Beginner-friendly – Easy to learn without memorizing syntax.
2.
Error reduction – Prevents syntax errors as blocks fit only in correct places.
3.
Visual understanding – Provides a clear, visual representation of the program
flow.
4.
Faster development – Programs can be created quickly by dragging and dropping
blocks.
b.
Explain any three features of scratch.
Three
features of Scratch
1.
Visual programming – Programs are built by connecting code blocks instead of
typing code.
2.
Interactive media creation – Supports making animations, games, and interactive
stories.
3.
Cross-platform use – Runs on web browsers and different operating systems
without installation.
c.
Differentiate between block programming text-based programming?
|
Feature |
Block
Programming |
Text-Based
Programming |
|
Interface |
Drag-and-drop
visual blocks |
Typed
code using a keyboard |
|
Ease
of Use |
Beginner-friendly,
no syntax to learn |
Requires
learning syntax and structure |
|
Error
Handling |
Minimal
errors (no typos or syntax errors) |
Prone
to syntax and logical errors |
|
Speed
of Development |
Faster
for simple projects |
Better
for complex or large-scale projects |
|
Flexibility |
Limited
customization |
Highly
flexible and powerful |
|
Best
For |
Kids,
beginners, education |
Professionals,
complex applications |
d.What
is the use of Looks block in scratch? List any four blocks in Looks block.
The
Looks block is used to change the appearance of sprites and display messages on
the stage.
Four
blocks in Looks block:
1.
say \[Hello!] for 2 seconds
2.
change costume to \[costume name]
3.
show
4.
hide
e.
List any four blocks of Control block and explain any two of them.
Four
blocks of Control block in Scratch:
1.
wait (1) seconds
2.
repeat (10)
3.
forever
4.
if <> then
Explanation
of two:
wait (1) seconds – Pauses the script for a
specific amount of time.
forever – Repeats the contained set of
instructions endlessly.
f.
Explain any four components of micro bit.
Four
components of Micro: bit
1.
LED Display – Shows text, numbers, and patterns.
2.
Buttons (A & B) – Used for input controls.
3.
Accelerometer – Detects movement and orientation.
4.
Pins/Connectors – Used to connect external devices and sensors.
g.Explain
any three application area of Arduino Uno.
Three
application areas of Arduino Uno
1.
Home automation – Controlling lights, fans, and appliances automatically.
2.
Robotics – Building and controlling robots.
3.
Environmental monitoring – Measuring temperature, humidity, and air quality.
h.
You are given a task to move the Cat sprite randomly and bounce if it strikes
on edges saying "I am hurt" for infinite times. List and explain the
block components used in this program.
Task
– Cat sprite moves randomly, bounces on edges, says “I am hurt” infinitely
Blocks
used:
1.
forever (Control block) – To repeat actions endlessly.
2.
move (10) steps (Motion block) – Moves the sprite forward.
3.
point in direction (pick random 1 to 360) (Motion block) – Sets a random
direction.
4.
if on edge, bounce (Motion block) – Makes sprite bounce when hitting edges.
5.
say \[I am hurt] for 2 seconds (Looks block) – Displays message when hitting
edges.
Explanation:
The forever block keeps the action running
continuously.
The sprite moves in a random direction using
point in direction and move blocks.
If on edge, bounce changes its direction upon
collision.
Say block displays “I am hurt” to make the
interaction realistic.
Lab
Activities
a
Write a program for the sprite cat that asks any two numbers and display the
product of two numbers.
b.
Write a program to move the sprite randomly at any position and bounce when it
strikes on the edge.
C.
Write a program to move the sprite from left to right forever.
d.
Write a program to make the cat sprite fly towards your mouse pointer.
e.Write
a program to change the size of the sprite with the arrow keys.
f.Create
a fun game in scratch where there are two sprites on the stage cat sprit and a
ball sprite. Ball is forever moving on stage. The cat sprite's movement
controlled by pressing all arrow keys :up/down/left/right. If the cat sprite
touche the ball sprite, it exclaims "Hurray!!".
g.Write
a program to create a quiz game.