The Ignoramus' Quiz No.20

1. In European football, what does the waving of white handkerchiefs by fans signify?

2. Which Christian sect has two orders of priesthood - Melchisedek, dealing with religious matters and Aaronic, dealing with temporal matters?

3. How do jerry cans get their name?

4. Which scientific theory, now accepted as mainstream, gets its name from a derogatory term used to describe it by its detractor-in-chief, Fred Hoyle?

5. The Porsche 911 was initially christened Porsche 901 but the name had to be changed just before its release. Why?

For the answers, please visit: ten things i didn't know until last week.