Ch. 6 Lesson 2 How do water & air

affect weather?

water cycle

precipitation

storagestorage

condensation

evaporation

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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

Water Cycle Song

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)

http://www.epa.state.il.us/kids/fun-stuff/water-cycle/wheel-part-1.html

evaporation condensation

precipitation

storage

Earth’s atmosphere• blanket of air

that surrounds Earth

• most air = nitrogen

•4/5 = nitrogen

•1/5 = oxygen

•Less than 1/5 = carbon dioxide, water vapor, other gases

air pressure• pushing force of air

• moves from place w/ high pressure place w/ low pressure

As you go higher, air As you go higher, air pressure decreases.pressure decreases.

land breeze• blows from land sea

• land heats & cools more quickly than land

sea breeze• blows from sea land

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)