When you observe the wind vane, the head of the arrow shows the

When you observe the wind vane, the head of the arrow shows the direction from which the wind is blowing. The wind vane is an instrument used to measure the direction of the wind. It consists of an arrow-like object mounted on a vertical rod, which freely rotates about the rod. The arrow has a larger surface area on one end than the other, causing it to point in the direction from which the wind is coming. The head of the arrow points to the direction from which the wind is blowing while the tail of the arrow is aligned with the opposite direction, giving an indication of the wind's direction.