When Ravi spins a spinner, he notices that it slows down and eventually stops. He is curious about this and asks his teacher some questions. List at least two questions that he could ask.
Two questions Ravi could ask are: (1) Why does the spinner slow down and stop instead of spinning forever? (2) What force or forces act on the spinner to make it stop? Other possible questions include: Does the surface on which the spinner spins affect how long it spins? Why does the spinner start to shake or wobble as it slows down? What can be done to make a spinner spin for a longer time?
Explanation
This question encourages students to develop scientific inquiry skills by formulating questions based on observations. The chapter earlier mentioned that when a coin spins, 'it slows down, it begins to shake.' Students are encouraged to record their observations under 'I wonder' columns in activity tables. This question develops curiosity and the ability to ask meaningful scientific questions about everyday phenomena.