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Moon
Earth
Earth's path
Moon's path
Sun
Ancientpeople used
sundial totell the time
As the earth isrotating, it movesround the sun
Rotates fromwest to east inown axis
Takes 28 daysfor 1 complete
rotationRotation
The shadowmoves from westto east through-
out the day
The length becomesshorter approachingnoon, lengthens in
afternoon
B
A
D
Rotateson itsaxis
Rotates fromwest to east
Takes 24 hoursfor 1 complete
rotation
Rotation
Rising of sunin the east
Setting of sunin the west
Day and nightoccurence
Changing lengthsand positions ofshadow
Causes
Revolvesaround the sunin own orbit
Takes 365¼ daysor 1 year for 1complete orbit
Orbit takeshape of
eliptical path Revoles round thesun from west to east
Movesaround the
sun
Revolves around theearth in own orbit in
an eliptical path
Takes 28 days for1 complete orbit
Movesaroundearth
C
F
Shadow : west
Sun : east
Sun : directly on top
Shadow : directlybelow object
NoonMorning
E
Spherical shape of theearth causes some part of
earth gets the sunlight.
Part of earth facing the sun,receives sunlight, experiences
day, gradually experiencing night
Part of earth facing away fromthe sun does not receives
sunlight, experiences night,gradually experiencing day
Rotation ataxis,
from westto east,causes
rising andsetting of
sun
Pointer cast shadow tonumbered scale of hours
Numberedscale ofhours
WEST
Axis : imaginaryline from North Poleto South Pole
EAST
Evening
Shadow : west
Sun : east
LateMorning
Sun : west
Shadow : east
Afternoon
a
bc
d
long shadowshorter shadowshortest shadow
shadow lengthens
1
2
3
4 ab
c
d
1
2
ab
a
b
Moon
Eliptical path
Earth
12
12
1
a
b
1
2
3
2
long shadow
Sun : westShadow : east
Eliptical pathROTATION
AND MOVEMENTOF EARTH
ROTATION ANDMOVEMENT OF
MOON
MOVEMENT OFEARTH AND MOON
AROUND SUNSHADOW LENGTHS
AND POSITIONSTHROUGHOUT THE
DAY
DAY AND NIGHTOCCURANCE
SUNDIAL
The moon alsomoves roundthe sun
THE EARTH, THEMOON,
AND THE SUN(1 - 2)
VOLUME 2
12
3
4
As the moonis rotating, itmoves round
the earth
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