Up next in How to Do Fun Tech & Science Projects (52 videos)
School science fair coming up? Don't worry: We've got step-by-step instructions to dozens of science projects in this Howcast video series, including how to build an erupting volcano, how to make glow-in-the-dark art, how to make a weather barometer, how to make disappearing ink, how to make 3-D glasses, and how to make a marshmallow gun.
You Will Need
- 2 paper plates
- Poster board
- Plastic straw
- Straight pin
- Pencil with new eraser
- Modeling clay
- Crayons (optional)
- Styrofoam plate (optional)
Write the directions
Write the four directions -- east, west, north and south -- equally spaced along the outer edges of an inverted paper plate.
Use scissors to cut an arrow point and an arrow tail from poster board, making each about 2 inches in length.
Make slits in straw
Make small slits at each end of the straw using scissors.
Place the shapes
Place one of the poster board shapes into a slit at each end of the straw to create an arrow. This will later point to the direction the wind is blowing.
Insert a straight pin through the center of the straw, and then into the eraser tip of the pencil, making sure to leave ample space for spinning at the upper and lower sides of the straw.
Set the pencil by pushing its point through the center of the paper plate, and then sticking it into a lump of modeling clay serving as a base.
Place on second plate
Place the structure on a second paper plate, and then glue the plates together with the clay mound inside.
Move the wind vane outdoors after the glue dries, and then align the directions using a compass. Watch the arrow go to work! By learning what type of weather is associated with wind directions in your area, it's a breeze to forecast conditions.