4th grade ch. 6 lesson 2 how do water and air affect weather
TRANSCRIPT
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Ch. 6 Lesson 2 How do water & air
affect weather?
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water cycle
precipitation
storagestorage
condensation
evaporation
Powered Powered by energy by energy from Sunfrom Sun
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evaporation liquid water
water vapor
condensation water vapor liquid water as it cools
precipitation any form of water that falls to Earth
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Water Cycle bracelet• White= clouds (condensation)• Light blue = rain (precipitation)• Brown = ground (storage)• Dark blue = water in lake, river or
ocean (storage or runoff)• Green = plants (storage)• Yellow = sun (source of energy that
keeps cycle moving• Clear = water vapor (evaporation)
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http://www.epa.state.il.us/kids/fun-stuff/water-cycle/wheel-part-1.html
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evaporation condensation
precipitation
storage
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Earth’s atmosphere• blanket of air
that surrounds Earth
• most air = nitrogen
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•4/5 = nitrogen
•1/5 = oxygen
•Less than 1/5 = carbon dioxide, water vapor, other gases
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air pressure• pushing force of air
• moves from place w/ high pressure place w/ low pressure
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As you go higher, air As you go higher, air pressure decreases.pressure decreases.
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land breeze• blows from land sea
• land heats & cools more quickly than land
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sea breeze• blows from sea land
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Activity-How does water change state?
Day 1
Start
Day 2
After freezing
Day 2
When ice began to melt
Day 2
When all was melted
Height (mm)
Temp. (oC)