Blow Holes And Geos

Question 1

What is a geo?

Answer 1

Long, narrow linear landform of erosion

Question 2

Give a brief description of the formation of a geo

Answer 2

1. Blow hole is formed
2. Air and water forced through blow hole by breaking waves
3. Causes large pressure changes in cave and further erosion
4. Blow hole eventually collapses forming geo

Question 3

Give 3 characteristics of geos

Answer 3

• Occur on high energy coasts
• Follows fault lines
• Generally formed in softer rocks

Question 4

What is a blowhole?

Answer 4

Vent/hole in a sea cave extending to the clifftop formed from a geo

Question 6

Give a brief description of the formation of a blowhole

Answer 6

1. Sea cave is formed at base of cliff due to continuous erosion
2. Sometimes, bear vertical joint is present at back of sea cave
3. Wave reaches back of sea cave, hydraulic action takes place
4. Finally, joint is widened into vertical funnel called blowhole when erosion extend to clifftop