1. The hydrostatic equation says that:
2. If the temperature in Houston is warmer than the temperature in Boston, then what else must be true?
3. Sea level is near 1000 mb. How high up is 500 mb?
4. How high up is 700 mb?
5. On a given day, the pressure in Dallas is much higher than the pressure in Seattle, while the 500 mb heights over both cities are similar. What else must be true?