L-6 Block in Scratch / Class 7th Computer

 Class- VII

Subject: Computer 

L-6  Introduction to Blocks in Scratch

Answer the following questions:

A) Multiple choice questions:

1) What is the function of 'when green flag clicked' command block?

a) Points sprite in specified direction.

b) If condition is true, runs the block inside.

c) Runs the script.

Ans:  c) Runs the script

2) What will happen if we place the blocks in the scratch at wrong order?

a) The program will start working slowly.

b) The program will terminate.

c) The program will not work well.

Ans:c) The program will not work well.

3) What is the name of code blocks rounded or curved top and bump at the bottom?

a) Reporter Block

b) Stack Block

c) Hat Block

Ans: c) Hat Block 

4) Name the code block that controls sprite placement, direction, rotation, and movement.

a) Looks

b) Motion

c) Control

Ans: b) Motion

5) Identify the block given below.

a) Hat Block

b) Cap Block

c) C Block

Ans: c) C Block

B) Fill in the blanks using the words from the help box:

[ HAT, C, Stage, Boolean, Elongated ]

1) In Scratch, the sprite moves on the Stage when you run a program.

2) C blocks used for conditions and loops in script.

3) Boolean blocks are shaped like an  elongated hexagon.

4) These blocks are shaped like a  hat with a rounded top and a bump on the bottom.

5) Reporter blocks are used to report numeric, string, or Boolean values in your scripts.

C) State 'T' for True or 'F' False:

1) C blocks are used to stop script.                                 FALSE                                               

2) Reporter Blocks are rounded at the both end.            FALSE    

3)  You can turn the Sprite only in clockwise direction. FALSE

4) Hat Blocks are used to start script.                            TRUE

5) A sprite can move only in forward direction.           FALSE

                               

EXERCISE 

A) Multiple Choice Questions:

 1) Which block will perform arithmetical operations on numbers and / or variables.

a) Looks Block

b) Operator Block

c) Sensing Block

Ans: b) Operator Block

2) What block will be used to change the costume of a sprite?

a) Data Block

b) Looks Block

c) Operator Block

Ans:b) Looks Block

3) Which block used for logical test?

a) 

b)  

c)  

Ans: 

a) 

4) Name the thinking based on true / false conditions in script programming _________ .

a) Logical

b) Mathematics Based

c) Philosophical

Ans: a) Logical

5) Identify the block given below.

a) Data Block

b) Event Block

c) Control Block

Ans: c) Control Block

B) Fill in the blanks using the words from the help box:

[Block, Background, Script, Logical, Stage]

1) The  stage is 480 units wide and 360 units tall.

2) A programming language that uses code blocks to create directions for a compute is  Scratch. 

3) The  bakground image for a canvas is called a stage.

4) A  block is a specific instruction you use to create a program in scratch.

5) A hexagon shaped operator that returns a TRUE or FALSE condition is called  logical operator.

C) State "T" for True or " F" for False:

1) The Centre of the stage is at x-y coordinate (0, 0)         TRUE

2) Scratch is not able to use webcam.                                TRUE

3) To control the flow or timing of other code blocks, you will use control blocks.                                                                    TRUE

4) Boolean data will contain "True" or "False" vales.       TRUE

5) Clone block will creates a copy of sprite.                      TRUE