Pour the remaining mercury into a beaker. Place a finger over the open end of the tube and invert the tube, lowering it carefully into the beaker containing the remainder of the mercury. Clamp the tube upright on the stand. Build a Windsock Wind socks are one of many types of kites. The wind flowing through the ring causes the wind sock to face the direction from which the wind comes.
Airports use windsocks to help pilots and controllers determine the direction of the wind.
Cut a vertical slit near the bottom. Then cut horizontal slits perpendicular to this cut at its end points - like an H on its side. In fact, these terms have their own specific meanings. A-B. Click on this site. Choose from the menu presented.