Praxis Earth And Space Sciences Content Knowledge (5571 5572) Practice Test

Anticlines and synclines are formed by which geologic process?

Volcanic Activity Erosion by Water Glacial Carving Folding Due to Compression

Correct Answer:

Folding Due to Compression

Explanation:

Folding due to compression. When tectonic plates push against each other, the horizontal compressive stress causes originally layered rocks to buckle and form folds. An anticline is an upward-curving fold with the oldest rocks at the crest and limbs that dip away from the center. A syncline is a downward-curving fold with the youngest rocks toward the center and limbs that dip toward the center. This folding is a direct result of compressional forces, unlike volcanic activity or erosion (which sculpt or remove material) or glacial carving (which shapes surfaces but doesn’t create these folded structures).

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