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Understanding Sinkholes Quiz

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Questions and Answers

What is a common impending sign of sinkholes?

Presence of odd bugs like slugs

Cracks in roads or pavement

Leaves falling from trees

Sudden drop of well water levels (correct)

Which of the following signs could indicate debris flows?

Jammed doors and windows

Water breaking through the ground surface in a new location (correct)

Cracks on the paved streets and driveways

Cracks in interior walls and floor

What can be an outcome of cracks appearing on walls at the base of a slope?

Water appearing at the base of the slope (correct)

Decreased soil erosion

Increased plant growth

Decreased rainfall

Which of the following could be considered a rainfall-induced landslide sign?

Land movements and debris downslope Signup and view all the answers

What type of bugs in homes can be an impending sign of sinkholes according to the text?

Centipedes Signup and view all the answers

What are the two most common formations of sinkholes?

Solution or dissolution and Cover Collapse Signup and view all the answers

Which type of sinkhole formation is characterized by a very abrupt collapse that can be catastrophic?

Cover Collapse Sinkholes Signup and view all the answers

What distinguishes natural sinkholes from man-made sinkholes?

Cause of the formation Signup and view all the answers

What are some impending signs of sinkholes according to the text?

Appearance of new cracks at the foundations of buildings Signup and view all the answers

Which type of sinkhole can occur when individual grains of sand move downward to replace others?

Cover Subsidence Sinkholes Signup and view all the answers

What is the key characteristic of Cover Subsidence Sinkholes?

Gradual downward movement of the surface Signup and view all the answers

What is a 'topple' or 'tumble' in terms of landslides?

A forward rotation of mass around a point below the center of gravity Signup and view all the answers

What can a 'slump' be defined as?

A rotational slide with several parallel curved planes of movement Signup and view all the answers

What characterizes a 'flow' in terms of landslides?

Short-lived, closely spaced planes of movement Signup and view all the answers

What do debris flows result from?

Mixing with additional water and sediments Signup and view all the answers

What are some impending signs of rainfall-induced landslides?

Unusual noises and breaking trees Signup and view all the answers

What characterizes sinkholes?

Vertical downward movement of displaced material Signup and view all the answers