Multiple choice general knowledge

Excavation of shallow depressions by wind erosion is called

  1. Mushroom rocks

  2. Notches

  3. Blowouts

  4. Barchans

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Blowouts are shallow depressions or hollows formed by wind erosion when wind removes loose sand or soil particles. Mushroom rocks (A) are wind-eroded rocks with a distinctive shape, notches (B) are erosional features at cliff bases, and barchans (D) are crescent-shaped sand dunes, none of which are excavations.