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Chapter 6

Scratch Programming: Introduction to Game Creation

Class 6 - APC Understanding Computer Studies


Fill in the blanks

Question 1

Scratch is a visual programming language.

Question 2

The platform on which animation is created is called the stage.

Question 3

Block contains various scripts.

Question 4

Backdrop is the background of the stage on the Scratch window.

Question 5

Each object available on the stage is known as a sprite.

Question 6

The process of customisation adds different forms to a sprite.

State whether the following statements are True/False

Question 1

Script area is the stage where an object appears while animation.
False

Question 2

You can change an existing sprite with another sprite on the stage.
True

Question 3

You can add multiple sprites on stage.
True

Question 4

It is difficult to customise the backdrop in Scratch programming.
False

Question 5

Unwanted costumes can be deleted from the list.
True

Match the blocks

Question 1

Match the blocks with their appropriate scripts

BlocksScripts
Eventssay 'Hello!' for '2' secs
Controlplay note '60' for '0.5' beats
Soundturn anticlockwise 15 degrees
Motionwhen 'space' key pressed
Looksif ' ' then

Answer

BlocksScripts
Eventswhen 'space' key pressed
Controlif ' ' then
Soundplay note '60' for '0.5' beats
Motionturn anticlockwise 15 degrees
Lookssay 'Hello!' for '2' secs

Short Answer Questions

Question 1

What is meant by a sprite?

Answer

Each object appearing on the stage is called a sprite. Sprite can be:

  1. posted from the library
  2. can be an image from a camera, or
  3. created through a paintbrush.

Question 2

Define costume.

Answer

A costume refers to alternate appearances of a sprite. Sprites can change their look to any of its costumes.

Question 3

What is meant by block palette?

Answer

Each block contains a list of commands. The set of commands under each block is listed when a block is clicked. They are called block palettes.

Question 4

What is meant by changing the backdrop?

Answer

Changing the backdrop means to change the background of the stage on which the sprite appears.

Question 5

In what way can a costume be deleted?

Answer

To delete a costume, follow these steps:

Step 1: Select the sprite from the list of sprites on the Scratch window.

Step 2: Click Costumes. It will show the costumes of the selected sprite.

Step 3: Select the costume that is to be deleted.

Step 4: Click the Delete button that is shown on the top right corner of the costume icon.

The selected costume will be deleted.

Long Answer Questions

Question 1

Write all the steps to customise a sprite.

Answer

To customise a sprite, follow these steps:

Step 1: Select the sprite from the list of sprites on the Scratch window.

Step 2: Click Costume and then click Costume from Library.

Step 3: Select Category or Theme. A list of various costumes will appear in the right pane.

Step 4: Select an appropriate costume and click OK.

Step 5: The sprite with other costumes will appear in the costume pane.

Question 2

How is the size of a sprite changed?

Answer

To change the size of a sprite, follow these steps:

Step 1: Click the Shrink or Grow option available on the File tool bar.

Step 2: Set the mouse pointer on the appropriate sprite and keep clicking the left mouse button.

Step 3: The sprite will shrink or grow accordingly.

Step 4: Remove the mouse pointer from the sprite and keep it on the blank space of the stage and click the left mouse button once.

Step 5: The sprite will be resized as per the requirements.

Question 3

Give two differences between the Move block and the Looks block.

Answer

Two differences between the Move block and the Looks block are as follows:

Move blockLooks Block
This block is used to set movement in a sprite or backdrop.This block is used to change the appearance of a sprite or backdrop.
It includes scripts like move, turn, point, go to etc.It includes scripts like say, think, colour, show, hide etc.

Question 4

Why do we need to use a control block?

Answer

Control block allows us to control the actions of a sprite or a backdrop. Some control options are wait, repeat, forever, if, if-else, etc.

The scripts- repeat, forever and if-else are container scripts because they enclose one or more scripts within them. As soon as the container script is clicked, all the enclosed scripts are executed simultaneously.

Question 5

Mention any three points that you will keep in mind while planning an animation.

Answer

Three points that one will keep in mind while planning an animation are-

  1. The type of backdrop design to be added on the stage.
  2. The types of sprites appearing on the stage.
  3. Types of movements to be created among the sprites.
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