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文檔簡(jiǎn)介

What

isEvaporation?1It

is

the

process

of

aliquidheating

to

form

a

gasWhat

isCondensation?2It

is

the

process

of

a

gascoolingto

form

aliquidThe

Water

CycleWater

is

constantly

moving

between

sea,

air

and

land3The

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landThe

sun

shines

andthe

sea

isheated4heatThe

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landEvaporation5The

waterevaporates

andforms

cloudsThe

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landCondensation6As

air

rises

it

coolsand

condenses.

Itreaches

the

groundas

rain,

snow,

sleetorhail.The

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landRivers

flow

to

the

sea7LakesformThe

snowmelts

andflowsSnow

formsThe

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landThe

Water

Cycle

is

complete8The

Water

CycleWater

is

constantly

moving

between

sea,

air

and

land9The

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landThe

sun

shines

andthe

sea

isheated10heatThe

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landEvaporation11The

waterevaporates

andforms

cloudsThe

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landCondensation12As

air

rises

it

coolsand

condenses.

Itreaches

the

groundas

rain,

snow,

sleetorhail.The

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landRivers

flow

to

the

sea13LakesformThe

snowmelts

andflowsSnow

formsThe

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landThe

Water

Cycle

is

complete14The

Water

CycleWater

is

constantly

moving

between

sea,

air

and

landQuestionsWhere

does

the

water

come

from?What

happens

to

it

when

the

sun

heatsit

up?As

the

vapour

rise

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