Factors of Weather Cloud Formation Precipitation Cloud formation

Factors of Weather Cloud Formation & Precipitation

Cloud formation • “Cool Clouds” by NASA https: //www. youtube. com/watch? v=7 Mnxn. OH CCic • Complete the movie worksheet.

Cloud Formation • Think about air pressure from Dr. Herman’s lesson • Where are the high and low pressure areas? Fig 15

Cloud Formation • What process is occurring in #1? • What is the physical state of water at each point? Fig 15

Cloud Formation • Clouds form when water vapor (gas) in the atmosphere condenses (on condensation nuclei) to form very small liquid water droplets or ice crystals.

Cloud Formation • Think about humidity. • What influences how much water vapor that the air can hold? • So, as air cools, it holds less water vapor. • Vapor condenses into liquid. Photo credit: http: //www. conradaskland. com/blog/2007/07/humidity-effects-on-tuning-and-intonation/

Cloud Formation • Remember, we learned a little about air masses and fronts with Dr. Herman • How Fronts relate to cloud formation and precipitation (type, intensity, etc): https: //www. youtube. com/watch? v=hu. KYKykjcm 0 Really think about it- Why do clouds form?

Cold front Image source: http: //apollo. lsc. vsc. edu/classes/met 130/notes/chapter 11/graphics/cf_xsect. jpg

Warm front Image source: http: //geospatial. gsu. edu/geog 1112/files/Lab 7/Warm_Front. jpg

Cloud Formation • Clouds cannot form in completely “clear air” • Condensation nuclei: solid particles in the atmosphere (pollen, smoke, pollution. . )

Cloud Formation • Sizes of different molecules in the air Water vapor is even smaller than the condensation nuclei.

Cloud Types Quick Video: https: //www. youtube. com/watch? v=6 ODJA 1 t. IWOA

Cloud types REVIEW: Putting this all together with Dr. Herman’s lesson (This video is about 7 minutes. Take good notes to study from!) https: //www. youtube. com/watch? v=F 7 Cv. Ub 5 yx_E - You will likely need to pause this video to take notes What clues do the could give us about precipitation? (from the video)

Precipitation • Liquid or solid water that falls from the clouds to Earth’s surface. • Why does water fall from the clouds? Photo credit: http: //www. wookmark. com/image/138430/remake-rainy-day-par-rhads

Precipitation • When water drops get to heavy to resist gravity, they fall to the ground. • Precipitation type varies by temperature. Photo credit: http: //www. easttennesseewildflowers. com/gallery 3/index. php/weather/Precipitation_types

Precipitation • This fun little video sums up everything that we have been learning about fronts, wind, cloud formation, and describes the formation of different types of precipitation. • https: //www. youtube. com/watch? v=v. NIPBf. Kbec 8 • Pay close attention to the formation of clouds around the mountain!

Precipitation in Mountains Photo credit: http: //xpeditiononline. com/imags/newkili 2010/rain. png