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What does “denudation” mean?
→ Wearing away of the Earth’s surface.
Name one process of denudation.
→ Weathering / erosion / mass movement / deposition.
What does weathering do?
→ Breaks down rocks where they are.
What is freeze-thaw action?
→ Water freezes in cracks, expands, and breaks the rock.
Where does freeze-thaw happen?
→ In cold, mountainous areas.
What do we call the broken rocks after freeze-thaw?
→ Scree.
What type of rock does carbonation affect?
→ Limestone.
What mixes with rainwater to make a weak acid?
→ Carbon dioxide.
What reacts to create calcium bicarbonate?
Calcium Carbonate and Carbonic Acid
Give a landscape where carbonation can occur.
Burren.
Moss- Is it an example of m or c weathering?
M
Iron Oxide (rust) M or C?
C
Give the two types of weathering.
Chemical and Mechanical
Tell me how carbonation occurs.
How does freeze-thaw happen.
Give the name of the two parts of limestone pavement before carbonation.
Joints and bedding planes
