N w Questions: 1. What happened to the arrow as the wind blew? 2. Which direction did the tail of your wind vane take? 3. Did the direction of the wind change after some time? Why?
1.The wind will have more effect on the end of the pointer with more area exposed, and that end of the pointer will be “downwind”. That makes the arrow (always the smaller area in any vane I’ve ever seen) point into the wind. On most weather vanes the arrow points into the wind
2.Weather vane wind direction
The weather vane is made up of a tail and arrow. The tail fin catches the wind and the arrow points toward the direction the wind is blowing FROM. If the arrow on the weather vane is pointing north then it means there is a north wind. In other words, the wind is blowing from north to south
3.You notice that the wind changes direction roughly every five minutes from 340° to 360° and back and forth... ... It is known that the wind is directionally deflected over land (frictional effects) Wind higher up in the atmosphere is less hindered and so less deflected
Answers & Comments
1.The wind will have more effect on the end of the pointer with more area exposed, and that end of the pointer will be “downwind”. That makes the arrow (always the smaller area in any vane I’ve ever seen) point into the wind. On most weather vanes the arrow points into the wind
2.Weather vane wind direction
The weather vane is made up of a tail and arrow. The tail fin catches the wind and the arrow points toward the direction the wind is blowing FROM. If the arrow on the weather vane is pointing north then it means there is a north wind. In other words, the wind is blowing from north to south
3.You notice that the wind changes direction roughly every five minutes from 340° to 360° and back and forth... ... It is known that the wind is directionally deflected over land (frictional effects) Wind higher up in the atmosphere is less hindered and so less deflected