Hi my name is Sally and I am a scientist. I study earthquakes, volcanoes, and glaciers. Let me tell you some things about them. Right now I am standing near a meander river. A meander forms when moving water in a stream erodes the outer banks and widens its valley, and the inner part of the river has less energy and deposits silt.
This is an oxbow lake. An oxbow lake is a U-shaped lake that forms when a wide meander from the main stem of a river is cut off, creating a free-standing body of water. This landform is so named for its distinctive curved shape, which resembles the bow pin of an oxbow.
Brrrr! It's freezing on this glacier! A glacier is formed from compacted layers of snow. When new layers of snow fall, previous layers compress into ice.Glacier formation occurs at either the north or south poles and can take many years.
Right now I am in Hawaii and I am standing at the bottom of a volcano. A volcano is a natural feature of the earth’s surface (usually a mountain) where molten rock becomes active and ejects lava on the surface of the planet. Volcanoes are usually located where tectonic plates meet.
Wow! It sure is hot all alone on this island! Another type of mountain in the sea is an island. It rises from the sea floor, but reaches above the ocean’s surface, sometimes just barely. An island is a solitary mountain formed by volcanic activity. Islands take millions of years to form. The best example of volcanic activity of islands are the Hawaiian Islands.
Behind me are some huge, tall mountains! They are called the Appalachian Mountains. Mountains are formed by convergent plate boundaries. A convergent plate boundary is an actively deforming region where two (or more) tectonic plates or fragments of lithosphere move toward one another and collide.