Weathering

Question 1

Area of exposed limestone are called ?

An example of a ….. landscape in Ireland is the ?

Answer 1

Areas of exposed limestone are called karst landscapes.

Example: the burden co.clare

Question 2

Formation of two SURFACE features in a karst region:

Answer 2

Limestone pavement and swallow hole.

Question 3

Explain limestone pavement?

Answer 3

Rain water falls on karst landscape it passes through the vertical joints in a landscape carbonation causes the joints to become wider.

Big gaps are called grikes. Blocks left in between are called Clint’s

Question 4

Explain Swallow hole?

Answer 4

Rivers on a limestone pavement disappear down through the large grikes they widen them and they river will then does it disappear underground through a Swallow hole.

Pollnagollum swallow hole in the burden is over 6 meters wide and 16 meters deep.

Question 5

Name two underground features in a karst region?

Answer 5

Caves and caverns

Drip stone features

Question 6

Explain caves and caverns

Answer 6

As rivers flow underground to swallow holes carbonation makes the passages wider to form caves. the caves get bigger and bigger until they form caverns. Ailwee caves and fun dunmore caves examples in Ireland

Question 7

Explain Dripstone features(stalactites and stalagmites

Answer 7

As rain water seeps through rocks it carries dissolved limestone with it.some of the water reaches the roof of caves. the drop slowly evaporate and leave behind small deposits of limestone called calcit. gradually the calcite build up to form a Stalactite hanging from the roof of a cave.