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Home » Weather Experiments » Make your own anemometer

Make your own anemometer

Published: Feb 12, 2023 by Emma Vanstone · This post may contain affiliate links · Leave a Comment

Anemometers are used to measure wind speed. The cups catch gusts of air which makes them spin around. Measurements are taken by counting the number of revolutions the anemometer makes in a set period of time. The stronger the wind, the more revolutions the anemometer makes. Modern anemometers tend to be digital, but the principle is the same.

Anemometer on a tower with blue sky in the background.

When and why is wind speed important

Wind speed is very important for aeroplanes and other aircraft, which need to consider the speed and direction of the wind as they fly, take off and land.

Wind speeds are also important for tracking weather patterns and predicting extreme weather events.

How to make an anemometer

You’ll need

4 paper cups

1 pin

Pencil with an eraser on the top

Tape or glue

2 strong straws

Anemometer Instructions

Tape or glue the straws together in the shape of an x.

Carefully push the pin through where the straws cross.

Push the bottom of the pin into the eraser on the top of the pencil.

Tape or glue a cup to each straw. All four cups should be facing the same way.

Check the cups’ spin and place the anemometer outside.

Make a mark on one cup and count how many times the anemometer spins in one minute.

Homemade anemometer made with paper cups and 4 straws in a cross shape.

Anemometer Extension tasks

Build a second anemometer using smaller cups. Does it make the same number of revolutions as the larger version?

DIY anemometer made with 4 transparent cups attached to 4 straws in a cross shape

Build a wind vane to find out which direction the wind is blowing.

Make a tornado in a jar and learn about tornado alley in the USA.

Learn about the Beaufort scale to find out about the effects of increasing wind speeds.

Or, try one of my other weather science activities and experiments!

DIY anemometer made with paper cups. Fun weather science experiment for kids

Last Updated on February 14, 2023 by Emma Vanstone

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Safety Notice

Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

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