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Across 2. The measure of the force with which air molecules push on a surface. 3. The average weather conditions in an area over a long period of time. 5. The behavior of the atmosphere - wind, temperature, pressure, precipitation - at a particular place and time. 7. The sound caused by the rapid expansion of air along an electrical strike. 8. The amount of water vapor held in the air. 9. A collection of millions of tiny water droplets or ice crystals. 10. The large electrical discharge that occurs between two oppositely charged surfaces.

Down 1. Solid or liquid water that falls from the clouds to the Earth. 2. A large body of air that has the same properties as the surface over which it formed. 4. The boundary that forms between two different air masses. 6. A destructive, rotating column of air that has very high wind speeds, is visible as a funnel-shaped cloud, and touches the ground.