Weather

2. air mass A warm air mass that forms in the tropics and has low air pressure
6. Front Forms when a warm air mass is caught between two colder air masses.
9. air mass A humid air mass that forms over oceans
10. A sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud, between nearby clouds, or between a cloud and the ground.
13. Front a front where warm air moves over cold air and brings drizzly rain
15. A rapidly whirling, funnel-shaped cloud that reaches down to touch Earth's surface.
16. a storm with thunder and lightning and typically also heavy rain or hail.

1. A heavy snowstorm with strong winds
3. Front forms when cold air moves under warm air which is less dense and pushes air up (produces thunderstorms heavy rain or snow
4. air mass A dry air mass that forms over land
5. Front Forms when a cold air mass meets a warm air mass and they touch but do not move
7. the boundary between two air masses with different temperature and density
8. air mass A cold air mass that forms north of 50° north latitude and south of 50° south latitude and has high air pressure
11. the sound caused by the rapid expansion of air along a lightning strike
12. A tropical storm that has winds of about 119 kilometers per hour or higher.
14. Mass A huge body of air that has similar temperature, humidity, and air pressure at any given height