Exercises
1. Write the full forms of the given abbreviations:
a. MIT b. LED c. IDE d. UNO e. IDE
2. Choose the best answer.
1. To make your program generate results, you can use event block called
________.
(a) when clicked (b) when the sprite clicked
(c) both (a) and (b) (d) none of the above
2. The background image in the stage area is called _________.
(a) background (b) wallpaper
(c) backdrop (d) design
3. Which type of block in Scratch is used to repeat actions?
a) Motion Block b) Control Block
c) Looks Block d) Sensing Block
4. What is the primary use of “sensing blocks” in Scratch?
a) To control sprite movements
b) To detect events like key presses or mouse clicks
c) To display messages on the stage
d) To add sound effects to a project
5. There are ____ extensions in Scratch programming.
(a) 5 (b) 9 (c) 11 (d) 12
6. “ask What’s your name? and wait” is an example of _______ block
(a) sensing (b) control (c) operator (d) looks
Curriculum Development Centre
78 Computer Science , Grade 9
7. Which block in Scratch for micro programming is used to display text or
patterns on the LED matrix?
a) Show LEDs Block b) Display Block
c) Animation Block d) Matrix Block
8. What are devices like Micro:bit and Arduino used for?
(a) Physical computing
(b) Combining programming with physical devices
(c) Creating interactive projects
(d) All of the above
3. Write short answers to these questions.
a. What is scratch?
b. List down the components of Scratch interface.
c. What is a micro: bit? Give any two applications of micro: bit.
d. How does a micro: bit help in physical computing?
e. What is ATmega328P?
4. Write long answers to these questions.
a. Define block programming along with its features.
b. What are the applications of block programming? Explain in brief.
c. How is block programming different from traditional text-based
programming?
d. What are blocks in block programming? Describe the block components
of Scratch programming language.
e. What is an Arduino UNO? Write down its types of components.
f. What is a microcontroller? What is it used for?
g. You are given a program where the cat sprite rotates 90° and says,
“Namaste” when the sprite is clicked. List and explain the block
components used in this program.
