Question

In the cross section of the sand dune below, what direction was the wind blowing?

1) from left to right
2) from right to left
3) down
4) up
5) back and forth from left to right and right to left

Answer 1

The direction of the wind that shaped a sand dune can be determined by examining the steep slope of the cross-bedded structures within the dune. The steep side points downward in the direction the wind was moving.

Step-by-step explanation:

The question "In the cross section of the sand dune below, what direction was the wind blowing?" is seeking to establish the likely wind direction based on the observed sedimentary structure on a cross-section of a sand dune. Cross-bedding provides valuable clues regarding the direction of wind or water movement that formed the ripple or dune patterns. When considering cross-bedding, you would observe that the steep side of a ripple or dune slopes downward in the direction of the prevailing wind or water flow.

As such, the correct answer to the question would be whichever side the steep slope of the cross-bedded structure inclines towards. For educational purposes, without the specific illustration, the answer would be either option 1) from left to right or option 2) from right to left depending on where the steep slope is facing.