MOTION

OF EARTH

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EARTH HAS TWO TYPES OF MOTIONS

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ROTATION

REVOLUTION

EARTH

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ROTATION

MOVEMENT OF THE

EARTH ON ITS AXIS

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REVOLUTION

MOVEMENT OF THE

EARTH AROUND THE

SUN

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AXIS P

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JM

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CIRCLE OF ILLUMINATION

DUE TO SPERICAL

SHAPE, HALF OF THE

EARTH FACE SUN

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SIDE FACING THE SUN

HAVE DAY AND THE

OTHER SIDE

EXPERIENCE NIGHT

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THE CIRCLE THAT

DIVIDES THE DAY FROM

NIGHT ON THE GLOBE

IS CALLED CIRCLE OF

ILLUMINATION

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EARTH TAKES 24

HOURS TO

COMPLEATE ONE

ROTATION

THIS PERIOD IS

CALLED EARTH DAY

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DO YOU THINK

ROTATION IS

IMPORTANT?

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WHAT WILL

HAPPEN IF

EARTH DID

NOT ROTATE?

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REVOLUTION

TAKES PLACE

AROUND THE SUN

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IT TAKES 365.25

DAYS TO REVOVE

AROUND THE

SUN

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WE TAKE 365 DAYS

IN A YEAR AND

IGNORE 6 HOURS

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KEEP ON ADDING

THESE SIX

HOURS FOR

FOUR YEARS

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6+6+6+6= 24

HOURS= 1 DAY

THE FORTH YEAR

WILL BE OF 366

YRS = LEAP YEAR

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IN LEAP YEAR 1 DAY IS

ADDED TO THE MONTH OF

FEBRUARY

FEBURARY= 28 DAYS

FEBURARY= 29 DAYS (LEAP

YEAR)

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HOW MANY

SEASONS DO WE

HAVE ON

EARTH?

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JM

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1 YEAR IS DIVIDED INTO FOUR

YEARS

SUMMER WINTER

SPRING AUTUMN

SEASONS

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HOW DOES

CHANGES TAKES

PLACE IN

SEASONS?

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JM

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THINK?

THINK?

THINK?

Pooja

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JM

I.