natural environment of the pacific northwest
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Natural Environment of the Pacific Northwest. Rainshadow Effect. Rainshadow Effect. Agenda Go over objectives Take notes on the Rainshadow Effect Short in-class activity Finish/turn in chapter vocabulary. Rainshadow Effect. Objective: At the end of this lesson I should be able to… - PowerPoint PPT PresentationTRANSCRIPT
Natural Environment of the Pacific Northwest
Rainshadow Effect
Rainshadow Effect
• Agenda– Go over objectives– Take notes on the Rainshadow Effect– Short in-class activity– Finish/turn in chapter vocabulary
Rainshadow Effect
• Objective:– At the end of this lesson I should be able to…• explain the 5 steps of the Rainshadow Effect.• act out the Rainshadow Effect.
Rainshadow Effect
• Overview– Most important climatic phenomenon in PNW– Creates two differing natural environments
Rainshadow Effect
• Five steps
Rainshadow Effect
• First step– Starts with warm ocean currents in the Pacific– Air is warm and moist– Wind blows the warm, moist air into the sides of
the Olympic Mountains and the Coastal Mountains
Rainshadow Effect
• Second step– Warm, moist air hits the western (windward) side
of the mountains– Air rises and cools– Drops moisture on the side of the mountains
Rainshadow Effect
• Third step– Air crests the mountains– Air descends and warms– Less moisture is dropped
Rainshadow Effect
• Fourth step– Air moves across the Puget Sound– Picks up more moisture
Rainshadow Effect
• Fifth step– Air hits the western (windward) side of the
Cascades– As the air rises over the Cascades it drops
moisture again– Repeats process across Eastern WA
Rainshadow Effect
• Results– Western (windward) slopes• More rain• Greener• More people
– Eastern (leeward) slopes• Less rain• Drier• Less people
Rainshadow Effect
• Activity– Each row is going to get a card– The card has one of the five steps– Refer to your notes– Take five minutes to devise a short skit (less than 1
minute)– You will act these out for the class
Rainshadow Effect
• Tomorrow– Turn in vocab (if you have not yet)– West/East of the Cascades – co-teaching