Denudation Flashcards
What is weathering?
Weathering is the breakdown and decay of rocks that are exposed to weather, it takes place on site and the waste materials are not removed
What is denudation?
Denudation occurs by weathering and erosion
Name the 2 types of weathering?
~Chemical weathering
~Mechanical weathering
What is erosion?
Erosion is the breaking down of rocks and the rock particles that have been broken down are transported and deposited elsewhere
What is erosion caused by?
~Rivers, sea
~Glaciers
~Wind
What is a common type of mechanical weathering?
Freeze-thaw action
What is freeze-thaw action?
Freeze-thaw action occurs when rain falls and collects in crack in rocks, the rain freezes overnight and melts again in the morning, this causes the rock to crack and overtime the crack grows larger until the rock breaks away
What is carbonation?
Carbonation occurs when rain mixes with carbon dioxide in the atmosphere forming a weak acid, limestone contains calcium carbonate which reacts with the weak acid causing it to dissolve