1. What are the types of loops contained in Scratch? What are the differences?

2. If you are given a situation where you want an action to repeat, but you don’t know how long it should repeat for, which loop is the best structure to use? Why?

3. Does the following loop structure work? Does it make sense? Why or why not?

4. How can sprites “know” when to begin an action? Is there more than one way?

5. Are the following code snippets equivalent? Why or why not?