Professor Shackleton gestured to the Hufflepuff and Ravenclaw players to gather close around the Gobstones court. She handed a golden drawstring bag to a member of the Hufflepuff team and a blue bag to the Ravenclaw team. Each contained the appropriately colored gobstones. She then opened the drawstring on a separate grey bag and levitated the stones into a small circle in the center of the court. She announced, "Welcome Eagles and Badgers to your preliminary match-up! I expect that before we begin you will have all made yourself familiar with the rules. You now have your Gobstones, so let's get started!" Quote:
Round 1: Question 1
Subject: Muggle Studies
Level: Medium
Which gaseous substance do Muggles sometimes use to make things float?