The document explains the concepts of Earth's rotation and revolution, detailing how rotation leads to day and night while revolution results in seasonal changes. It covers the specifics of Earth's movement, including the tilt of its axis and significant terminology such as perihelion and aphelion. Key facts about solstices, equinoxes, and climatic impacts due to these movements are also discussed.

1. SCIENCE 6
Rotation and
Revolution
of the Earth

2. Do you know
someone
whose birthday
falls on
February 29?

4. That person has a
birthday
celebration every
four years.

5. What makes some
persons born
every four years.

6. Look at this month ‘s days…
Do we have the 29th
day?

7. Rotation:
Daily Motion

8. SCIENCE WORD DRILL
Rotation Revolution
Aphelion Perihelion
Apogee Perigee
Coriolis

9. Rotation
• Rotation is the movement of
an object on its axis.
• The Earth rotates from West
to East.
• The period of one complete
Rotation is 23 hours,56
minutes,4.2seconds.

10. Rotation
• The Earth’s rotation is
inclined or tilted 23.5
degrees.
• The Earth rotates 15
degrees per hour.

12. Measuring the Earth’s Rotation
1. Mean solar day is the time
interval from one noon to
the next, about 24 hours.
2. Sidereal day is the time it
takes for Earth to make one
complete rotation 23 hours,
56 minutes, 4.2 seconds.

13. The Sidereal and Mean Solar Day

14. Results from
Earth’s Rotation

15. Results from Earth’s Rotation
1. Earth’s Rotation result to the
occurrence of day and
night.
- Places facing the Sun
experiences day while those
facing away experience night.

16. Day and Night

17. Earth and Day and Night

18. Results from Earth’s Rotation
• 2. The daily rising and
setting of the Sun, Stars
and Moon.
• The Sun, Stars and Moon
rise in the East and sets in
the West.

19. Rising and Setting

20. The Sunrise as seen on space

21. Results from Earth’s Rotation
• 3. Earth’s Rotation affect the
flow of air and water.
• Flowing air and water are
diverted from N to S and E to W.
• Coriolis effect is the bending
of wind due to the Earth’s
rotation.

22. Flow of Air and Water

23. The Coriolis Effect

24. https://www.youtube.com/watch?v=EXasopxAFoM
Ask questions about the video.

25. Revolution:
Annual Motion

26. Revolution
Revolution is the movement
of an object around the
bigger object.
The Earth revolves around
the Sun in an ellipse orbit.

28. Revolution
The Sun is not at the center
of the orbit but is slightly off
to one side.

29. Perihelion and Aphelion
Perihelion is when the Earth is
closest to the Sun, about 147
million kilometers. (January)
Aphelion is when the Earth is
farthest from the Sun, about
152 million kilometers. (July)

30. Perihelion and Aphelion

31. Revolution
The Earth revolves around the
Sun as it rotates on its axis.
The period of one revolution
around the Sun is defined as
a Year, 365 days, 5 hours, 48
minutes and 46 seconds.

33. Results from
Earth’s
Revolution

34. 1. Occurrence of Seasons
Earth’s seasons are created by
the tilted axis and the Earth’s
revolution around the Sun.
Seasons are short periods of
climatic changes caused by
unequal amount of sunlight
reaching the Earth.

35. Science Word Drill
Northern Hemisphere
Southern Hemisphere
Summer Solstice
Autumnal Equinox
Winter Solstice
Vernal Equinox

37. Seasons
Seasons are short period of
climatic change caused by
the changes in the amount
of light coming from the
Sun an area receives.

38. Seasons
Areas near the equator
(torrid zone) receive the
same amount of light whole
year round. Two types of
climates are experienced –
Wet and Dry.

39. Seasons
Areas in the Temperate Zone or
Middle Latitude receives more
and sometimes less light at
certain times of the year. Four
Seasons are experienced-
Summer, Autumn, Winter and
Spring.

41. The Seasons of
the Earth

43. The Earth’s Seasons
The Earth is divided into two
hemispheres, the Northern
and Southern Hemisphere.
The Earth’s axis is tilted 23.5
degrees which causes the
unequal heating of areas.

45. Northern
Hemisphere
Southern
Hemisphere
Summer (June 22) Winter (June22)
Autumn of or Fall
(September 23)
Spring (September 23)
Winter (December 22) Summer (December
22)
Spring (March 21) Autumn (March 21)

47. 1. Summer Solstice
• When the North Pole tilts
directly towards the Sun
during June 22.
• When the South Pole tilts
directly to the Sun during
December 22.

49. Summer Solstice
• The Northern Hemisphere
experiences Summer while
the Southern Hemisphere
experiences Winter.

50. Summer Solstice

51. 2. Autumn or Fall
• As the Earth moves, Summer
turns to Autumn or Fall.
• During September to
November, the axis moves
sideways and both the Northern
and Southern Hemisphere
receive equal heat and light.

52. Autumn or Fall

53. Autumnal Equinox
• When the Sun is directly
overhead in the equator, this is
called Autumnal Equinox.
• The Autumnal Equinox
happens on September 23
when the night time and
daytime are equal.

54. Autumnal Equinox

55. 3. Winter Solstice
• During December to February,
the North Pole is facing away
from the Sun.
• The Northern Hemisphere
receives least energy coming
from the Sun while the
Southern Hemisphere receives
the greatest heat and light.

56. Winter Solstice

57. Winter Solstice
• Areas in the Northern Hemisphere
will experience Winter while areas
in the Southern Hemisphere will
experience Summer.
• During Winter days, night time is
longer than day time.
• Winter arrives with Winter Solstice
on December 22.

58. Winter Solstice

59. 4. Spring
• From March to May, the
Earth’s axis is not pointed
towards the Sun.
• Both the Northern and
Southern Hemisphere
receive equal heat and light.

60. Vernal Equinox

61. Spring and Vernal Equinox
• The Spring Equinox comes on
March 21 in the Northern
Hemisphere.
• At this time the Southern
Hemisphere experiences Fall
and the Autumnal Equinox.

62. Spring and Vernal Equinox

63. Key Concepts:
• Rotation is the movement
of the Earth on its axis
while Revolution is the
movement of the Earth
around the Sun.

64. Key Concepts:
• Earth’s rotation causes day and
night while Earth’s revolution
causes the four season
(Summer, Autumn, Winter,
Spring) in the Temperate Zones.
• The Seasons are caused by the
tilt in the Earth’s axis.

65. Amazing Facts
About The Earth’s
Seasons

66. 1. The Midnight Sun

67. Midnight Sun
• The Sun never sets in 24
hours.
• During Summer Months in
the places near the North
and South Poles. (Norway
and Alaska)

69. 2. The Solstices
• June 21 marks the day when
the Earth is turned the most
toward the Sun. This is
known as Summer Solstice. It
is the longest, sunniest day
of the year.

71. 2. The Solstices
• December 21 marks the day
when the Earth is turned the
farthest from the Sun. This is
known as Winter Solstice. It
is the shortest, darkest day
of the year.

73. 3. Response to Light
• Plants and trees lose their leaves
in response to the shortening
days and cooler temperatures of
fall.
• Trees and plants open new leaf
and flower buds as the weather
warms in spring.

75. 4. Hibernation
• Winter is a hard
time for animals.
They have a
hard time
finding food.
Many hibernate
or sleep more.

77. Choose the correct answer.
Write only the letters:
1. Rotation of the Earth
causes ______
I. Day and night
II. Wind deflection
III. Climate changes
IV. Differences of time in
different places
A. I only C. I,II, III
B. I and II D. I, II, IV

78. 2. Which of the following is NOT
true?
A. Rotation of the Earth causes
day and night.
B. Revolution of the Earth causes
day and night
C. Revolution of the Earth causes
differences in length of daytime
and night time in
different places.
D. Revolution of the Earth causes
different
climate in different regions

79. 3. Which of the following is
true?
A. Earth rotates on its axis as
it revolves around the sun.
B. The sun revolves around
the Earth while Earth is
rotating.
C. Earth rotates once a month
as it revolves around the sun.
D. Earth completes one
rotation in 365 days.

80. 4. What causes the
deflection of the wind
from the poles to the
equator and vice-versa.
A. rotation of the Earth
B. Revolution of the Earth
C. Tilting of the Earth’s
axis
D. Vertical rays of the sun

81. 5. The time between
today’s sunrise and
Tomorrow’s sunrise
is about ______.
A. 12 hours
B. 36 hours
C. 24 hours
D. 48 hours

82. 6. In a leap year,
the number of
days is _____.
A. 366
C. 365 ¼
B. 365
D. 365

83. 7. Earth makes a
complete revolution
around the Sun once
every _______.
A. day
B. season
C. year
D. minute

84. 8. Which of these is
strongly responsible for
the changes of the
season on Earth?
A. position of the moon
B. tilt of Earth on its axis
C. temperature of the
sun
D. distance to Mars

85. 9. What is the season in
the Northern
Hemisphere when
Earth’s axis is tilted
toward the sun?
A. summer
B. spring
C. autumn
D. winter

86. 10. The set of 24
regions which
determines the time of
different places of the
planet.
A. Prime Meridian
B. Axis
C. Time Zones
D. Rotation

87. THANK
YOU…