Coasts are constantly shifting as sea levels change and waves erode the land. In some parts of the world, coasts are transforming so rapidly that the changes are observable each year. This poses a threat to homes and buildings along the coasts.Know More
Intriguing coastal features such as arches and pillars are formed when soft rocks are eroded by the waves, forming hollow caves. When there is a cave on each side of a large, soft rock, the caves may eventually be eroded until they form the inside of an arch. If the top of the arch collapses, a lone pillar is left behind.
Coasts also change according to the sea level, which has risen and fallen repeatedly over the past few million years. During an ice age, sea levels drop because so much of the oceans' water is frozen. When the ice age ends and temperatures rise, the ice melts, leading to a big rise in sea levels.
Due to coastal erosion and rising sea levels, hundreds, if not thousands, of coastal cities may experience severe problems in the next 100 years throughout the world. Flooded coasts change shape, sometimes permanently, and coastal flooding is considered a huge threat to coastal civilization. Entire cities could be lost over time to rising sea levels.Learn more in Landforms
The Interior Plains stretch across the barren interior of Canada and contain unique physical and geological features. Within the Interior Plains are three levels of elevation. These areas are all categorized as plains and plateaus, and the surface level of the Plains gradually decreases toward the east.Full Answer >
Coastal plains are flat, low-lying pieces of land that feature a body of water on one side and some type of landform on the other. According to National Geographic, a coastal plain can form either as a continental shelf or when water currents carry sedimentary materials that build up over time.Full Answer >
Interesting facts about the Grand Canyon are that its oldest rocks date back two billion years, it represents one-third of Earth's history and it's not the biggest canyon in the world. The Grand Canyon ranges in age from 250 million years old at the highest rocks to two billion years old at the lowest rocks.Full Answer >
The Ozark Mountains or Ozark Plateau is a rugged highland area stretching roughly from St. Louis, Mo., to the Arkansas River and occupying parts of Missouri, Arkansas, Illinois and Kansas. The tallest segment is the Boston Mountains, which stands up to 2,000 feet tall.Full Answer >