Which one of these questions would be good to ask in science?

Scientists ask lots of questions, some simple - some hard. What is this thing? What is it made from? How does it work? What does it do? Where did it come from? Why is it that shape? What is it like? Then scientists investigate questions. Some questions are just too hard to investigate at school or at home but some are simpler. Some questions are better than others. What makes a good question in science?