17 Questions
What is a common impending sign of sinkholes?
Sudden drop of well water levels
Which of the following signs could indicate debris flows?
Water breaking through the ground surface in a new location
What can be an outcome of cracks appearing on walls at the base of a slope?
Water appearing at the base of the slope
Which of the following could be considered a rainfall-induced landslide sign?
Land movements and debris downslope
What type of bugs in homes can be an impending sign of sinkholes according to the text?
Centipedes
What are the two most common formations of sinkholes?
Solution or dissolution and Cover Collapse
Which type of sinkhole formation is characterized by a very abrupt collapse that can be catastrophic?
Cover Collapse Sinkholes
What distinguishes natural sinkholes from man-made sinkholes?
Cause of the formation
What are some impending signs of sinkholes according to the text?
Appearance of new cracks at the foundations of buildings
Which type of sinkhole can occur when individual grains of sand move downward to replace others?
Cover Subsidence Sinkholes
What is the key characteristic of Cover Subsidence Sinkholes?
Gradual downward movement of the surface
What is a 'topple' or 'tumble' in terms of landslides?
A forward rotation of mass around a point below the center of gravity
What can a 'slump' be defined as?
A rotational slide with several parallel curved planes of movement
What characterizes a 'flow' in terms of landslides?
Short-lived, closely spaced planes of movement
What do debris flows result from?
Mixing with additional water and sediments
What are some impending signs of rainfall-induced landslides?
Unusual noises and breaking trees
What characterizes sinkholes?
Vertical downward movement of displaced material
Test your knowledge on sinkholes, depressions or holes in the ground caused by collapse of the surface layer.Learn about the most common formation of sinkholes such as solution or dissolution sinkholes.
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