Lesson Worksheet: Folds Geology
In this worksheet, we will practice describing the different types of folds and highlight their geological and economic importance.
Q1:
Which type of rock are folds found in?
- AOnly in igneous rocks
- BOnly in sedimentary rocks
- COnly in metamorphic rocks
- DIn all types of rocks
Q2:
Which structural element of a fold divides it in two?
- AThe fold crest
- BThe fold axis
- CThe fold hinge
- DThe fold limb
- EThe axial plane
Q3:
Which of the following statements about folds is correct?
- AFolds can occur only in sedimentary and metamorphic rocks.
- BFolds only occur in sedimentary rocks and are often found as several connected bends.
- CFolds only occur in sedimentary rocks and are often found as a single bend.
- DFolds can occur in any type of rock and are often found as a single bend.
- EFolds can occur in any type of rock and are often found as several connected bends.
Q4:
True or False: A fold is a tectonic geological structure.
- ATrue
- BFalse
Q5:
Which of the following is used to classify a fold?
- AThe geological history of the rock before it was folded
- BThe position of the fold’s structural elements
- CThe volume of rock that has been folded
- DWhere on Earth’s surface the fold has formed
Q6:
Which type of fold has the oldest rocks in the fold center?
- AA syncline
- BAn anticline
- CBoth anticlines and synclines
- DNeither anticlines nor synclines
Q7:
Which type of fold has the youngest rocks in the fold center?
- AAn anticline
- BBoth anticlines and synclines
- CNeither anticlines nor synclines
- DA syncline
Q8:
If we have a syncline that consists of two layers, what is the ratio between the number of fold axial planes and the number of fold axes?
- A
- B
- C
- D
Q9:
Which of the following statements about anticlines is true?
- AThey are convex downward.
- BThey are convex upward.
- CThey are concave upward.
- DThey act as poor traps for petroleum accumulation.
- EThe youngest rocks are in the core of the fold.
Q10:
True or False: Rock layers in synclines are concave upward.
- ATrue
- BFalse
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