Q1. There are many loops contained in scratch. You can make your animation go on forever but that is very dangerous, you can also make the animation only go for a certain number of times. alos the final kind of loop is an embedded loop where it is a loop inside of loop, you always have to be careful here because if you make someting inside of the loo go for a while, you won't be able to see the outter loop for a while and your animation will be very long.
Q2. I would use the forever loop because then it will keep going so you can test it to see how long you want it for.
Q3. This loop would not work, because you would never see the outter loop considering that the inner loop is a forever loop, so it would go on forever, making it so you can't ever see anything but the inner loop.
Q4. You can communticate between sprites, you can use the sencing controls where when one touches a certain color, then it triggers another sprite to do something. The last way I know is that you use a command key such as the green flag.
Q5. Yes because if the space bar isn't pressed for the one, then something happends and it is the same thing on the other. They are just in different order though. because if you do push the space bar in one of them then something else happends and it is the same in both the codes.
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