0
Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS
0
Rough Science
Explore the Challenges
Solve the Web Challenge
Meet the Rough Scientists
About the TV Series
Discover More
Feedback
Site Map
Explore the Challenges

The Challenge: Predict the Weather



How was our barometer made?

We made a barometer from a plastic tube partly filled with water (colored with log wood to make it easier to read). The top of the tube was bent over and sealed-off by binding with wire. The bottom of the tube went into a jam jar of water filled to a constant level. As the air pressure changed it applied a change in force on the water in the jam jar which changed the height of the liquid in the tube. Changes in height of the liquid in the tube therefore showed changes in air pressure. Jonathan and his barometer
Jonathan and his barometer