Control Blocks in Scratch Quiz

Which block is used to repeat an action forever?

• If

• Repeat

• Forever

• Stop

What is the primary purpose of an "if-else" block?

• To execute code continuously

• To stop the program

• To make decisions between two options

• To organize scripts into sections

Which of the following are control blocks in Scratch?

• Forever, Repeat, If

• Wait, Change Costume, Move 10 Steps

• Broadcast, When Green Flag Clicked, Stop

• Play Sound, Glide, Forever

What happens when a "repeat 10" block is used in Scratch?

• The action is performed 10 times and stops.

• The action repeats until stopped by the user.

• The action repeats endlessly.

• The program restarts after 10 repetitions.

What is the output of the following script? Script: Repeat 3 Move 10 steps Turn 15 degrees

• The sprite moves 10 steps and turns 15 degrees endlessly.

• The sprite moves 30 steps and turns 45 degrees.

• The sprite moves 3 steps and turns 15 degrees.

• The sprite remains stationary.

How do "if" and "if-else" blocks differ in functionality?

• Both run actions based on a condition; "if-else" includes an alternative path if the condition is false.

• Both require user input to execute.

• "If" is used for loops; "if-else" is not.

• "If" blocks always stop the program; "if-else" continues execution.

Why would you use a "forever" block instead of a "repeat" block?

• To perform an action only once

• To repeat actions for a limited number of times

• To run actions continuously without a defined endpoint

• To stop all other scripts

How can a combination of control blocks create interactivity in a Scratch project?

• By using loops to create animations and conditionals to respond to user inputs.

• By limiting the actions to a fixed number of repetitions.

• By preventing any user interaction in the program.

• By using only "repeat" blocks to create seamless execution.

A student creates a Scratch project where a sprite dances continuously when the "space" key is pressed and stops when the "s" key is pressed. Which blocks are necessary for this project?

• Forever, If-Else, Stop

• Forever, Repeat, Broadcast

• When Green Flag Clicked, Wait, Move

• Repeat, Change Costume, Glide

Which block is used to make a sprite say something in Scratch?

• Change Size

• Say [message] for [seconds]

• Switch Costume to [costume name]

• Show