Whirl Optical Illusion – Timestamped Multiple-Choice Test

What is the first action AI instructs the viewer to do?

• Create a new sprite from scratch

• Load a project file from your computer

• Draw an optical illusion from scratch

• Open the Scratch editor without a project

Which project file does AI load at the beginning?

• World Spiral V2

• 03 World Spiral V1

• Optical Illusion 101

• Ghostbusters Game

What is the appearance of the stage backdrop in the project?

• A gradient background with multiple colors

• A white background with a grid

• A black vector shape covering the stage

• A photographic image of space

What is the purpose of the “frame” sprite?

• It creates a colorful border around the stage

• It serves as a hidden hitbox for collisions

• It is a simple black frame that surrounds the other sprite

• It displays score information

What does the “sides” sprite consist of?

• A single complex shape

• Two simple vector rectangles

• Multiple animated characters

• A moving background image

Why does the frame sprite help the illusion look smooth?

• It adds a blur effect to the sides

• It hides the jagged edges of the rotating sides

• It rotates at the same speed as the sides

• It changes colors to match the illusion

Before adding the animation, what does Al instruct to do with the stage?

• Change the stage backdrop to a photograph

• Add the “begin game” code using the usual key shortcuts

• Delete all existing sprites

• Create new variables for the animation

Which two keys does Al mention as shortcuts for beginning and ending the game?

• B for Begin and E for End

• S for Start and X for Exit

• G for Go and H for Halt

• L for Launch and P for Pause

After pressing the green flag, what event does the stage script broadcast?

• Game Over

• Begin Game

• Stop Animation

• Reset Stage

For the “frame” sprite, which property is set immediately after receiving the begin game message?

• It is hidden

• It is moved to the center of the stage and pointed to the right

• It starts rotating immediately

• It changes its color to white