1. I recognize the "click the green flag" command, the wait command, and the rotate command.The change y and x by a certain amount of pixels is unfamiliar to me.2. The scratch screen is x=480 and Y=360. 3. The center of the scratch screen is in the middle of the screen at 0,0 4. The units of measurement in the scratch screen are pixels, also known as steps in Scratch. 5. One can have as many sprites as one wants, however, only one stage. There can be multiple backdrops on one stage.