erosion and deposition Flashcards
Erosion
is the process by which soil and sediment (weathered rock) are transported (moved) from one place to another by water (freshwater and ocean waves), wind, glaciers, and gravity
Deposition
is the process in which weathered rock and soil are laid down or dropped by wind, water, glaciers, or gravity
Water
This agent is considered the main agent of erosion and moves an enormous amount of weathered rock and soil creating some of the most impressive landforms on Earth
Delta
This fan-shaped deposit of weathered rock and soil that is created when a river’s current slows when it empties into a large body of water, such as a lake or an ocean- landform created by moving water
Alluvial fan
This is a fan-shaped deposit of weathered rock and soil that is created when a fast-moving mountain stream flows onto a flat plain (forms on dry land)- landform created by moving water
Ocean Waves
This agent of erosion and deposition pounds against the shoreline braking rock apart creating sand. It deposits sand to form beaches. It also moves or erodes sand away from beaches.
Beaches
Area of the shoreline made up of materials (sand, rock fragments, dead coral, shells) deposited by ocean waves-landform created by ocean waves
Sandbar
is an exposed ridge (landform) that is created from offshore deposits of sand, gravel or shell material-landform created by ocean waves
Barrier Island
Narrow island usually made of sand that forms offshore parallel to the shoreline that protects the shoreline by absorbing the energy of waves and storms- landform created by ocean waves
Wind
This agent causes erosion by lifting weathered rock particles and blowing them away. These small particles can be carried miles before they are dropped. It also smashes sand against rock surfaces to cause weathering.
