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

More Questions:

Which Kellogg's cereal was advertised by Tusk Tusk the Elephant?

The two-cent piece was the first US coin to feature which phrase?

In the video game "God of War', which mythological character must Kratos defeat at the end to finish the game?

Who was the first head coach to win three Super Bowls?

What soft drink, introduced in 1982, was the number three US seller within two years?

Who created Jason Bourne?

In what US state would you find Fort Dix?

Pierre is the capital of which US state?

What is the world’s most southerly capital city?

Which type of camel has two humps?

Which actress played a character named Ellen Ripley in the movie "Alien"?

What nationality is actor Stephen Fry?

Who wrote the novel "Sparkling Cyanide"?

In film, who is the alter ego of Daniel Hillard?

The CN Tower is in which Canadian city?