7 HimalayasHimalayas—The Himalayas are the world's highest mountain range. Mount Everest, the world's highest mountain is in this mountain range.
8 Ganges RiverGanges River—A sacred river in India, the Ganges starts in the Himalayas, flows through India, and is joined by the Brahmaputra River before emptying into the Bay of Bengal in Bangladesh.
9 Yellow RiverYellow River—(Huang He) The Yellow River flows east through China to the Yellow Sea.
19 Tigris RiverTigris River— The Tigris River has its source in Turkey. It flows east through Iraq where it joins the Euphrates River to form the Shatt-al-Arab, which then flows into the Persian Gulf.
20 Euphrates RiverEuphrates River— The Euphrates River has its source in Turkey. It flows east through Syria and then through Iraq where it joins the Tigris River to form the Shatt-al-Arab, near the Persian Gulf.
22 Mississippi RiverMississippi River— The Mississippi River is one of the longest rivers in the United States. It flows south from Minnesota and empties into the Gulf of Mexico near New Orleans, Louisiana.
23 Rocky MountainsRocky Mountains—The Rocky Mountains, located in the western part of North America, extend from Alaska, through Canada to the southern part of the United States.
24 Great PlainsGreat Plains— The Great Plains are located in the central part of the United States and Canada to the east of the Rocky Mountains. The region is made up of prairies, which are grasslands with few trees.
26 Amazon RiverAmazon River—Starting in the Andes Mountains in Peru, the Amazon River flows east across South America through Brazil to the Atlantic Ocean. The world's largest tropical rain forest is located in the Amazon River Basin.
27 Andes MountainsAndes Mountains—The Andes Mountains are the longest mountain range in South America. Located in the western part of the continent, the mountains extend through the countries of Colombia, Venezuela, Ecuador, Peru, Bolivia, Chile, and Argentina.