Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: An astronaut picks up a stone from the moon and throws it hard against another stone. He doesn't hear any sound. Why not?: Because there is no gravity; Because your ears don't work on the moon; Because rocks are soft and squashy on the moon; Because there is no air on the moon and so the sound cannot travel
Right answer summary: Because there is no air on the moon and so the sound cannot travel
Question state: todo