How does a homemade anemometer measure wind speed?

We use a special instrument called an anemometer. Wind speeds are usually measured using a cup anemometer. A cup anemometer has a vertical pole with three cups that capture the wind. The number of times the cups spin around per minute is counted electronically.

How do you make a wooden anemometer?


  1. Use the hole punch to make a hole in the side of each of the 4 paper cups.
  2. Use the hole punch to make 4 holes spaced evenly around the rim of the last cup.
  3. Slide 2 of the wooden dowels through the holes in the center cup.
  4. Insert the ends of the dowels into the holes of the other cups and tape them into place.

How do you make an anemometer out of paper cups?

To make an anemometer, start by punching a hole under the rim of 4 plastic cups. Then, punch 4 holes that are equal in distance from each other in a fifth cup, and make a small hole in the bottom of the cup. Next, push 2 straws into the cup through the holes so that they’re intersecting each other.

How do you manually measure wind speed?

Use a red marker or red paint and put a large X on one of the cups. Take your anemometer outside and measure the wind speed. To do so, count the number of times the cup with the red mark passes in front of you in 30 seconds. Multiply by two to get revolutions/rotations per minute (rpm).

What is the easiest way to measure wind speed?

Wind speed is measured with an anemometer. Most anemometers have four horizontal shafts arranged like the spokes of a wheel. The end of each shaft is cup-shaped. The wind pushes the concave side of the cup more than the convex side, so the anemometer spins in the wind.

How can I guess my wind speed?

If the flag flaps lightly, the wind speed is between 12 to 18 mph. If the flag is waving over the entire length, the wind speed is 19 to 24 mph. If the flag is stretched and flapping fast, the wind speed is 25 to 31 mph. If the flag is stretched and flapping hard, the wind speed is 32 to 37 mph.

How do you measure wind speed?

What tool do you use to measure wind?

The anemometer counts the number of rotations, which is used to calculate wind speed. An anemometer is an instrument that measures wind speed and wind pressure. Anemometers are important tools for meteorologists, who study weather patterns. They are also important to the work of physicists, who study the way air moves.