Thursday, April 9, 2015

Anemometer


We just learned about the huge storm clouds called roll clouds.
Many people have jobs where they work to try and predict the weather and different types of storms.
A very important thing to measure is wind speed.

The tool used to measure wind speed is called the Anemometer.
The first anemometers that were invented were small cups on a stick that spun around, and counted how many times it spun around per minute.
Some later anemometers look more like an airplane with a propeller and a tail, and they can tell wind direction and speed.

(from: wikipedia - wind speed)


Kid Facts - Blast from the past: Mudstone