Atmospheric pressure - Upside down glasses of water
Above us there is at least several kilometers thick air layer, which acts on the force of gravity -> rise in the air, \\\\\\\"atmospheric\\\\\\\" pressure.
Normal atmospheric pressure is 101325 Pa value. This value is surprisingly high, following an attempt to prove that pressure really has.
Educational phase: motivation, application
- paper / cardboard
- a glass with straight neck
- colored water
|Fill the jar to the brim with water.|
|Lay paper and slightly press.|
|Turn the glass upside down.|
|Non-waste paper from the jar, the water stays inside the glass does not flow.|
Application in practice
Control issues and challenges
- The original experiment was carried out with mercury. How high was a column of mercury?