Weathering
This is the break down of minerals and rocks into smaller peices. Heat, freezing weather, water, wind and ice can cause for weathering. Water wears down rocks a small amount or to the point to where the rocks is broken down in small particles. In freezing weathers if water gets into a crack of a rock it will freeze and expand causing the rock to break.
Erosion
This is the movement of broken down rocks and materials. Wind and water and earth movements are the main causes for erosion. A landslide is sliding down of a mass of earth or rocks down a cliff or mountain caused by gravity. A mudslide is a mass of mud and or other earth materials, that falls down a hillside or slope caused by water.
Deposition
This is when sediment and other broken down natural materials are layed down flat. This commonly happens in rivers when it creates new banks. Sediment also can come from when wind slows down.
Tsunamis
|
Tsunamis are caused by and sudden movement on the ocean floor resulting as, earthquakes, an underwater landslide and volcanoes erupting. The main causes for Tsunamis are underwater earthquakes. A Tsunami starts with the water reseeding from the shore then come with multiple waves up to 100 ft. Causing up to trillions of dollars of damage.
|
Glaciers
Glaciers are slowly moving mass or river of ice formed by build up and compaction of snow on mountains or near the poles. A glacier may look like a solid still block of ice but they are moving very slowly. Glaciers move do the overlying ice causing it to deform and flow, because it melts slowly it helps the glacier flow smoothly across the land. Typically a glacier moves a few centimetres to a few metres a day. Once in a while a glacier will speed up creating a surge meaning the glacier will move ten to hundreds of metres a day.
|