What does Earth do to cause night and day?

What layer of the Earth is right below the crust?

What element is a diamond composed of?

What scientist purposed the theory of continental drift?

What fuels were formed from the decayed remains of plants and animals?

In the United States, summer officially begins in which month?

What chamber do divers go into to prevent a diving sickness called "the bends"?

What is the full name for CFCs?

What substance, added to fog, makes smog?

Where is the deepest land gorge on Earth?

What is the calm center part of a hurricane called?

What are the fastest and strongest global winds called?

What is the wearing away of parts of the Earth by water or wind called?

What is a scientist who specializes in soil and crops called?

The average rain drop falls at a rate of how many feet per second?

What type of scientist studies microscopic plants and animals?

What happens to the pressure of water as depth under the water increases?

What sort of storm is shaped like a funnel and is very destructive when it touches down?

What season is between winter and summer?

Which age is known as the "Age of Fish"?

What is the process that removes salt from sea water?

What is the science of the origin, history, and structure of the Earth called?

What does the Saffir-Simpson scale measure?

What is another name for fossilized resin?

What is the very bottom soil horizon called?