Seterra will challenge you with quizzes about countries, capitals, flags, oceans, lakes and more! Introduced in 1997 and available in more than 40 different languages, Seterra has helped millions of people study geography and learn about their world., There are many rivers in the world, but none quite as impressive as the Amazon. Not only is it the world’s longest river, it has the largest drainage area and the fastest discharge rate. Even the Congo has an 80% slower discharge rate the Amazon, it still has the highest such rate in the world. In terms of length, the Nile is not far behind the Amazon, flowing through 11 modern African , How many continents can you identify on this free map quiz game?If you want to practice offline, download our printable maps in pdf format. The world has over seven billion people and 195 countries. All of those people live over six continents., The Mississippi River is the second longest in the United States and runs from Minnesota to Louisiana, terminating in a delta. The Rio Grande forms part of the border between the U.S. and Mexico; it has recently become overused and so the water level has fallen., This online map is a great way to learn the locations of the world’s oceans, seas and lakes. Challenge your friends to see who can get the most right in the shortest amount of time. Approximately 71 percent of the Earth’s surface is covered in water., This online map is a great way to learn the locations of the world’s oceans, seas and lakes. Challenge your friends to see who can get the most right in the shortest amount of time. Approximately 71 percent of the Earth’s surface is covered in water..