Scratch Questions and Answers for Viva

Answer-1: Scratch is a visual programming language designed to teach programming concepts to beginners, especially children.

Answer-2: Scratch was developed by the MIT Media Lab, and it was launched in 2007.

Answer-3: Scratch uses a block-based interface where users drag and drop code blocks to create programs.

Answer-4: Sprites are the visual objects or characters in Scratch that can be programmed to perform actions.

Answer-5: The Stage is the area where sprites are displayed and interact, serving as the program's visual output.

Answer-6: Scratch blocks are pre-defined pieces of code that represent actions or commands, organized into categories like motion, control, and looks.

Answer-7: "Events" blocks are used to trigger scripts in Scratch, such as "when green flag clicked" or "when this sprite clicked."

Answer-8: The Green Flag is used to start the execution of a Scratch project.

Answer-9: Loops can be created using control blocks like "repeat," "forever," or "repeat until."

Answer-10: A variable in Scratch is a storage placeholder for values that can be changed and used in the program.

Answer-11: You can add a new Sprite by selecting one from the library, painting one, uploading an image, or using the surprise button.

Answer-12: A costume is an alternate appearance for a Sprite, allowing it to change how it looks.

Answer-13: Costumes can be switched using the "switch costume to" block in the Looks category.

Answer-14: A backdrop is the background of the Stage that sets the scene for the project.

Answer-15: Sounds can be added using the "Sounds" tab or using the "play sound" block from the Sound category.

Answer-16: "Broadcast" sends a message to trigger scripts, and "When I Receive" listens for these messages to start a script.

Answer-17: Cloning allows you to create copies of a Sprite that can act independently in the program.

Answer-18: User interaction can be created using input devices like the keyboard and mouse, with corresponding "sensing" blocks.

Answer-19: The "Forever If" block continuously checks a condition and executes the attached script if the condition is true.

Answer-20: Lists are data structures that store multiple values in an ordered manner, used for managing data collections.

Answer-21: Scratch projects are saved online in your Scratch account or downloaded as a .sb3 file.

Answer-22: The Scratch Community is an online platform where users can share, view, and collaborate on Scratch projects.

Answer-23: You can remix a project by opening it and selecting the "Remix" button to create your version with modifications.

Answer-24: The "Motion" blocks control Sprite movement, such as moving, turning, and gliding.

Answer-25: The "Sensing" blocks detect inputs and interactions, such as key presses or Sprite touches.

Answer-26: Collisions can be detected using the "touching" sensing block.

Answer-27: The "Pen" extension allows Sprites to draw on the Stage by using pen down, pen up, and other drawing commands.

Answer-28: The "Operators" blocks are used for mathematical, logical, and string operations.

Answer-29: Conditional logic is implemented using the "if" and "if-else" blocks from the Control category.

Answer-30: The "Wait" block pauses the script for a specified amount of time.

Answer-31: Extensions add extra features to Scratch, such as accessing hardware devices or advanced functionalities like text-to-speech.

Answer-32: The "glide" block moves a Sprite smoothly to a specified position over a given time.

Answer-33: Use the "stop all" block from the Control category to stop all running scripts.

Answer-34: The "Go to" block instantly moves a Sprite to a specified position or to another Sprite.

Answer-35: Use the "repeat" block and specify the number of iterations for the loop.

Answer-36: Projects can be shared by clicking the "Share" button after saving them in your Scratch account.

Answer-37: The "switch backdrop to" block changes the Stage's background to another backdrop.

Answer-38: Custom blocks allow you to create reusable scripts by defining your blocks with specific behaviors.

Answer-39: Scratch supports STEM by teaching coding, problem-solving, logical thinking, and creativity through interactive projects.

Answer-40: The Scratch offline editor is a standalone version of Scratch that allows users to create projects without an internet connection.

Answer-41: Yes, Scratch can program robots using extensions like LEGO Mindstorms or micro:bit.

Answer-42: Timing or delays are added using the "wait" block from the Control category.

Answer-43: Animations are created by changing costumes, positions, or colors in sequence over time.

Answer-44: The "point towards" block directs a Sprite to face another Sprite or a specific position.

Answer-45: Boolean blocks return true or false and are shaped hexagonally for use in conditions.

Answer-46: Use the "stop this script" block from the Control category.

Answer-47: "Next backdrop" switches to the next backdrop in order, while "switch backdrop to" switches to a specific one.

Answer-48: Media like images or sounds can be imported via the "Choose a Sprite" or "Sounds" menu.

Answer-49: Scratch is designed primarily for children aged 8 to 16, but it is used by people of all ages.

Answer-50: Debugging can be done by running scripts step-by-step, adding messages with "say" blocks, or using the "wait" block for timing issues.