Tornadoes are columns of air that generally come into contact with what kind of clouds?

More Questions:

What year saw the release of the game Space Invaders?

What open-faced Italian omelette is, despite its name, more often baked than fried?

Name Tin Tin's Canine Companion?

What flowers did van Gogh paint most regularly?

Which of the Three Tenors lived in Mexico from the age of eight?

What name is given to the ancient Christian and Jewish underground burial chambers in and around Rome?

Which literary work's title character is named Roy Hobbs?

Who beheaded Medusa?

Africa's Victoria Falls are on which river?

What is measured in Candelas?

Luteinizing hormone is produced by what gland in the human body?

What breed was the dog in the 1960s TV show "Please Don't Eat the Daisies"?

What was Barbra Streisand's character's occupation in the movie "Meet the Fockers"?

In the movie "300', how many of the 300 Spartan warriors survive?

Who was the first US President to be impeached by the US House of Representatives?