Q and A
Q: Barometer is usually made up of mercury. Explain why is it not practical to have a water barometer?
A:
- The atmospheric pressure is about 10-meter water, which means it can push the water up to 10-meter height.
- Therefore a water barometer must be at least 10 meters long.
- This is not practical because the glass tube of the barometer may be broken or topple easily. It is also difficult to keep or move such a long tube.