Sub-aerial Weathering

• What is sub aerial weathering?

  Sub aerial weathering is the gradual breakdown of rock by agents such as ice , plant roots and acids
• What is sub aerial weathering?

  Sub aerial weathering is the gradual breakdown of rock by agents such as ice , plant roots and acids
•  Outline the process of sub-aerial weathering in the development of coastal landscapes:

  • Sub-aerial weathering involves the action of rainwater and insolation upon landforms in the coasts
  • Here material is broken in situ, rocks are weakened and can contribute to sudden large scale movements
  • Chemical weathering occurs when weak carbonic acid in rainwater dissolves limestone rocks
  • This leads to the formation of karst landscapes
• What does sub-aerial weathering involve?

  action of rainwater and insolation upon landforms in coasts
• Material is broken down in what in sub-aerial weathering?

  Material is broken in situ
• What happens when material is broken down in situ in sub aerial weathering?

  rocks are weakened and can contribute to large scale movements
• When does chemical weathering occur?

  chemical weathering occurs when weak carbonic acid in rainwater dissolves limestone rocks
• What type of acid in rainwater dissolves limestone rocks?

  weak carbonic acid
• What does the dissolving of limestone rocks lead to?

  The formation of karst landscapes