Weathering

Question 1

Types of weathering

Answer 1

Mechanical weathering (physical weathering )
Chemical weathering
Biological weathering

Question 2

A type of Mechanical weathering

Answer 2

Freeze-thaw action

Question 3

Describe the process of Freeze-thaw action

Answer 3

Freeze-thaw action is common in cold and high altitude areas like the Sugar Loaf,Co.Wicklow,occurs when temperatures alternate above and below freezing.Water seeps into cracks than it expands by 9%.As temperatures rise,the ice melts,and water penetrates deeper into the cracks.

Question 4

Pillars

Answer 4

Pillars form when a stalactite and stalagmite grow and meet each other.

Question 5

Stalagmite

Answer 5

Stalagmites form blow a stalactite.When the drops of water splash onto the ground of a dry cave,the evaporate leaving a mound of calcite on the floor.They grow upwards forming a thick column-shaped mound.

Question 6

Stalactite

Answer 6

Stalactite are thin straw-shaped or carrot-shaped columns of calcite that hang form the ceiling of a cave like an icicle.They form when water drips form the cave roof.

Question 7

Formation of Limestone pavement

Answer 7

Limestone pavement is created through chemical weathering process known as carbonation. When rai water combines with carbon dioxide, it forms carbonic acid,which dissolves the calcium carbonate ate in the limestone.

Question 8

Freeze-thaw action

Answer 8

Freeze-thaw action occurs in areas where temperature regularly change between freezing and thawing.

Question 9

Carbonation

Answer 9

Carbonation occurs when carbon dioxide co2 weathers rock like limestone.Rainwater mixes with co2 to create carbonic acid,which dissolves calcium carbonate.Limestone can contain up to 95% calcium carbonate.

Question 10

What is the formation of Karsts Landscape

Answer 10

Karst Landscape is an area of exposed limestone,formed by glaciation.It’s feature are formed due to carbonation.