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Across 3. The layer that we live in; most weather occurs here 4. _____ point is the temp at which water condenses. 7. Small cloud droplets join to form larger ones 11. Warm air is less dense than _____ air. 15. Tool to measure temperature 17. Particles in the air include dust, soil, microorganisms, ice and ____ from the ocean. 18. The ozone layer is located in the _______. 19. Method which produces global winds, ocean currents, and storms 21. All forms of water that fall from clouds 23. 32 degrees ___ is freezing and 212 degrees ____ is boiling 24. Thunderstorms 26. Temperature inversions act like a lid and trap ________ near the surface 28. 21% of our atmosphere is composed of this gas 29. Tool to measure relative humidity 30. ______ lifting occurs when an air mass is forced to rise over a barrier (mountains) 32. Liquid to a Gas 33. Water vapor is = 100% 34. Wispy high clouds, ice crystals; fair weather; no rain 35. Transfer of thermal energy 36. 0 degrees ___ is freezing and 100 degrees ____ is boiling

Down 1. Air moves from areas of high air pressure to areas of _____ air pressure. 2. Tool to measure wind speed 3. Measure of the average kinetic energy of particles in a material 5. Contains the ionosphere 6. Tool to measure air pressure 8. Outermost layer of the atmosphere; satellites 9. Amount of water vapor in the atmosphere 10. Puffy clouds, blue sky, no rain 12. Method by which Earth's surface is heated. 13. Method by which Earth's surface warms the air above it. 14. Gas to a Liquid 16. The _____'s energy drives the water cycle 20. Low sheetlike clouds, covers all of sky; light-moderate rain; dark 22. The layer above the stratosphere, meteors 25. Density of air ________ with increasing altitude 27. 78% of our atmosphere is composed of this gas 29. Wind moves air from ______ density to low density. 31. Bad nearby, good up high.