"Magic," Ginny replied. She wondered again if she really shouldn't be so out about it, but why not? It wasn't as though it was a secret people were coming form different times and realities, so why should she hide what she was? There was no Statute here -- if there was, she would have been contacted shortly after she arrived.
Still, the idea of motorized brooms and bludgers in a quidditch match made her grin. "The balls are charmed to move on their own. The bludgers and the snitch, anyway.
Then she wondered a little if any of the wizards or witches here could charm some brooms and they could play some sort of match. It was something to look into if they were stuck here much longer ... though she wasn't sure who else would want to play. Sirius for sure. Maybe Lily, Albus, and Dean. Otherwise, she just didn't know.