Which continent is known as the "Land Down Under"?

What is the imaginary line that divides the Earth into Northern and Southern Hemispheres?

Which mountain range is the longest in the world?

Which continent has the most countries?

Which is the only continent with land in all four hemispheres?

Which U.S. state has the most islands?

Which European country has the longest coastline?

Which line runs at 0° longitude on a world map?

Which ocean is to the west of South America on a world map?

Which European country is shaped like a boot on a map?