Sinkhole

Question 1

Some shallow holes are only _ meter deep while others go as deep as __ meters.

Answer 1

1; 50

Question 2

These sinkholes form as a result of a lack of groundcover, such as vegetation, over the bedrock. Water enters the bedrock through pre-existing holes and begins to circulate through it

Answer 2

Dissolution sinkholes

Question 3

It is the most dangerous type of sinkhole because they usually occur where the bedrock is covered by a layer of clay. Underneath that clay, water dissolves an underground cavity and then the ground sediments begin to erode into the cavity from the bottom and it continues to disintegrate from beneath, resulting in forming just a thin layer between the surface and the underground cavity. If that thin layer collapses a sinkhole will open up and swallow anything and everything on top of it.

Answer 3

Cover-collapse sinkholes

Question 4

One of the most known sinkholes in the world is the ______________________________________. It was popularized by _____________ who included the sinkhole in his top 5 scuba diving sites in the world

Answer 4

Great Blue Hole located in Belize.; Jacques Cousteau

Question 5

refers to a hole in the ground due to the groundwater dissolving the surface rock. It is also known as a ______________

Answer 5

sinkhole; doline or a sink

Question 6

are man-made sinkholes that can commonly occur in urban areas. These sinkholes can happen because of mining, drilling, weight changes, increase in waterflow, construction activities and groundwater pumping. The more water appearing in the system can dissolve and create an underground cavern, or there’s already an underground opening present.

Answer 6

Artificial Sinkholes

Question 7

These sinkholes begin with something permeable enclosing the sinkhole and containing a significant amount of sand. This material begins to spill - or spall, as the technical terminology calls it - into the bedrock caves. A surface depression may form over time. This material can clog the caverns and prevent water from flowing.

Answer 7

Cover-subsidence sinkholes

Question 8

Types of sinkholes

Answer 8

Dissolution sinkholes
Cover-subsidence sinkholes
Cover-collapse sinkholes
Artificial Sinkholes

Question 9

Most of the time, the surface rock is __________ which is a sedimentary rock that is easily eroded.

Answer 9

limestone

Question 10

Another infamous sinkhole is the ________________ located in China. This sinkhole is known to be the deepest sinkhole ever discovered.

Answer 10

Xiaozhai Heavenly Pit