Challenge 3: It’s a windy day out there! Tie a bandanna, piece of ribbon, or flagging tape to a stick and hold it in the air. Using a compass (or your phone compass), determine the direction of the wind. Wind direction is the opposite of the direction in which the cloth is pointing.

Extension: Make an anemometer to measure wind speed out of cups and cardboard: http://www.reachoutmichigan.org/…/le…/energy/anemometer.html