Which way, relative to the wind direction, does a wind vane (or weather vane) point. Explain why.
a. Parallel to the wind direction - A wind vane points in the same direction as the wind because it is designed to align itself with the direction from which the wind is coming.
b. Perpendicular to the wind direction - A wind vane points at a right angle to the wind direction because it is designed to rotate and point in the direction the wind is coming from.
c. Opposite to the wind direction - A wind vane points in the opposite direction from the wind because of the design and weight distribution of the vane.
d. Upward or downward - A wind vane does not point in any specific direction relative to the wind, but instead may be in a stationary position, not affected by the wind.