Weather

3. low pressure systems rotate this direction in northern hemisphere
8. an air system that pulls warm humid air up from lower altitudes to higher altitudes often brings cooler and/or stormy conditions
13. the barometric pressure at sea-level which is 1013.25millibar
17. the movement of substances going from areas of higher concentration to areas of lower concentration
18. an air-mass that forms over water characteristically humid
21. an air-mass that forms over land, typically dry

1. the air we breathe is primarily made of this gas
2. the ratio of a substance’s mass to its volume.
3. the deflection of high pressure air as it meets low pressured air due to the planet’s rotation
4. air systems that descend from the upper atmosphere to the ground displacing clouds bringing warm sunny conditions
5. the measure of thermal energy
6. low pressure systems rotate this direction in the southern hemisphere
7. an air-mass that forms over the tropics, typically hot
9. = the amount of atomic/molecular motion within a substance.
10. the rotation of high pressure systems
11. this instrument is used to measure atmospheric pressure
12. an air-mass which formed over a polar region
14. when water vapor condenses within clouds and falls toward the ground in the form of rain, snow, sleet or hail.
15. a unit used to measure barometric pressure
16. a tool used to visually display bands of similar temperature
19. lines on a meteorological map which denote barometric pressure zones
20. typically, isobar lines are drawn in multiples of _______
22. the driving