Keywords (everything) Flashcards
Triangulation stations
Are small black triangles located on hills
Spot heights
Give exact heights of a point
Mechanical weathering
Breaks up rocks into smaller pieces
Freeze thaw action
An example of mechanical weathering, explain how it works
Chemical weathering
Dissolves rocks. It occurs when rocks decay or dissolve
Carbonation
An example of chemical weathering
It occurs in limestone landscapes when rainwater mixes with carbon dioxide forming a weak carbonic acid. This reacts with other acids and causes rocks to slowly dissolve
Karst landscapes
Areas of exposed limestone
Grikes
Deep cracks in limestone pavement
Clints
Blocks of limestone that remain on top of the grikes
Peat
Is a non renewable resource found in Ireland. Peat is cut from bogs
Name the 2 types of bogs
Blanket bogs and raised bogs
Blanket bogs
- Are found mainly in the western counties of ireland
- they are shallow bogs
- their average depth is 2.6 metres
Raised bogs
- Are found mainly in the central part of ireland
- they are very deep
- their average depth is 10 metres
Types of material used to exploit bog
A ditcher- used to drain a bog
A grader- a machine used to level out the surface of a bog
A Miller- a machine used to scrape the peat
A ridger- gather peat into ridges, then puts plastic over it to protect it
The life cycle of a bog
Develops over thousands of years
Can be worked out in 50 years
Peatlands are rare habitats with unusual plants and animals