Mechanical Weathering
What is mechanical weathering?
weathering in which rock is physically broken into smaller pieces.
What is chemical weathering?
When rocks are dissolved overtime
What rock group does limestone belong to?
Sedimentary
What is erosion?
Erosion is the process of wearing down and carrying rocks away.
what is weathering?
Weathering is the process that breaks down rock into smaller pieces
What is an example of Mechanical Weathering?
Freeze thaw action
What is an example of Chemical Weathering?
carbonation
The vertical cracks in limestone are called...
Joints
Where can we see a karst landscape?
The Burren, Co. Clare
What are the three types of weathering?
mechanical, chemical, biological
Where can we find an example of mechanical weathering?
Great Sugarloaf, Co. Wicklow
What happens when acid rain falls on limestone?
The weaker parts of the limestone are dissolved. Clints and Grikes form.
Explain what clints and grikes are.
Clints are slabs of limestone and grikes are the gaps in between.
What is another name for a karst landscape?
Biological weathering happens when...
Rock is broken apart by burrowing animals or plants
What is it called when the rock breaks into smaller pieces as a result of mechanical weathering?
scree
What is carbonation?
The process of rock being dissolved by a weak carbonic acid
Stalactites grow up from the ground. True or false?
False! c for ceiling!
The 4 agents of erosion are wind, sea, glaciers and r...
rivers
Weathering is the movement of broken down rock. True or False?
False! Weathering breaks down rock but erosion is the movement of rock.
How does freezing and thawing break a rock?
When ice melts, water seeps in deeper into the cracks, and freezes again. With repeated freezing and thawing the cracks in a rock expand slowly and then the rock breaks off.
How does acid rain form?
Rainwater mixes with carbon dioxide in the air creating a weak carbonic acid
The mineral in limestone that is dissolved by acid rain is called...
Calcium carbonate
The river erodes down through the limestone and creates a ...
swallow hole
How does human activity contribute to weathering?
Quarrying
Mining