Weather

2. occurs when the clockwise motion around a high pressure system pulls in colder air toward the south and west of it
6. an instrument measuring atmospheric pressure
9. an instrument for measuring the speed of the wind, or of any current of gas
11. a balloon equipped with meteorological apparatus which is sent into the atmosphere to provide information about the weather
12. a condition of the atmosphere in which the pressure is below average
17. a body of air with horizontally uniform temperature, humidity, and pressure
18. A zone separating two air masses, of which the cooler, denser mass is advancing and replacing the warmer

1. a weather system that is the boundary separating two different types of air
3. an instrument for measuring and indicating temperature
4. a condition of the atmosphere in which the pressure is above average
5. a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period
7. the pressure exerted by the weight of the atmosphere
8. forms when a cold front or warm front stops moving
10. A warm air mass pushes into a colder air mass (the warm front), and then another cold air mass pushes into the warm air mass (the cold front
13. an instrument that measures the direction from which the wind is blowing
14. a circle showing the principal directions printed on a map or chart
15. forms when a warm air mass pushes into a cooler air mass
16. the force that attracts a body toward the center of the earth, or toward any other physical body having mass