PPT: Motions of the Earth

# PPT: Motions of the Earth | Social Studies (SST) Class 6 PDF Download

``` Page 1

Motions of
the Earth
Class - 6
Page 2

Motions of
the Earth
Class - 6
The Earth undergoes two fundamental motions: Rotation
and Revolution. Rotation, the Earth's daily axial movement,
causes the alternation between day and night. On the other
hand, revolution, the Earth's annual orbit around the Sun,
Motions of the Earth
Page 3

Motions of
the Earth
Class - 6
The Earth undergoes two fundamental motions: Rotation
and Revolution. Rotation, the Earth's daily axial movement,
causes the alternation between day and night. On the other
hand, revolution, the Earth's annual orbit around the Sun,
Motions of the Earth
Axis of the Earth:
Imaginary line making a 66½° angle with
the orbital plane.
Day and Night:
Spherical shape results in day for the lit
side and night for the dark side.
Circle of Illumination separates day and
night.
Duration of Rotation:
Earth takes approximately 24 hours for one
complete rotation.
Rotation - The Earth's Daily Motion
Page 4

Motions of
the Earth
Class - 6
The Earth undergoes two fundamental motions: Rotation
and Revolution. Rotation, the Earth's daily axial movement,
causes the alternation between day and night. On the other
hand, revolution, the Earth's annual orbit around the Sun,
Motions of the Earth
Axis of the Earth:
Imaginary line making a 66½° angle with
the orbital plane.
Day and Night:
Spherical shape results in day for the lit
side and night for the dark side.
Circle of Illumination separates day and
night.
Duration of Rotation:
Earth takes approximately 24 hours for one
complete rotation.
Rotation - The Earth's Daily Motion
Orbital Plane:
Plane formed by Earth's orbit around
the Sun.
Duration of Revolution:
Takes 365¼ days (one year) to
complete one orbit.
Leap year occurs every four years to
account for the extra 6 hours.
Elliptical Orbit:
Earth orbits the Sun in an elliptical
path.
Revolution - The Earth's Yearly Motion
Page 5

Motions of
the Earth
Class - 6
The Earth undergoes two fundamental motions: Rotation
and Revolution. Rotation, the Earth's daily axial movement,
causes the alternation between day and night. On the other
hand, revolution, the Earth's annual orbit around the Sun,
Motions of the Earth
Axis of the Earth:
Imaginary line making a 66½° angle with
the orbital plane.
Day and Night:
Spherical shape results in day for the lit
side and night for the dark side.
Circle of Illumination separates day and
night.
Duration of Rotation:
Earth takes approximately 24 hours for one
complete rotation.
Rotation - The Earth's Daily Motion
Orbital Plane:
Plane formed by Earth's orbit around
the Sun.
Duration of Revolution:
Takes 365¼ days (one year) to
complete one orbit.
Leap year occurs every four years to
account for the extra 6 hours.
Elliptical Orbit:
Earth orbits the Sun in an elliptical
path.
Revolution - The Earth's Yearly Motion
Inclination of Earth's Axis: Throughout its revolution, the Earth's
axis maintains a fixed inclination.
Seasonal Changes: The Earth experiences different seasons -
summer, winter, spring, and autumn - owing to its axial tilt.
Equinox and Solstices: Equinox occurs on 21st March and 23rd
September, marking equal day and night. Summer Solstice (21st
June) and Winter Solstice (22nd December) signify the Northern
and Southern Hemispheres' maximum tilt toward the Sun,
respectively.
Seasons and Inclination
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## Social Studies (SST) Class 6

66 videos|386 docs|80 tests

## FAQs on PPT: Motions of the Earth - Social Studies (SST) Class 6

 1. What are the two main motions of the Earth?
Ans. The two main motions of the Earth are rotation and revolution. Rotation refers to the Earth spinning on its axis, causing day and night. Revolution refers to the Earth orbiting around the Sun, resulting in the changing of seasons.
 2. How long does it take for the Earth to complete one rotation?
Ans. It takes the Earth approximately 24 hours to complete one rotation, which is why we experience day and night. This period of rotation is commonly known as a day.
 3. What causes the changing of seasons on Earth?
Ans. The changing of seasons on Earth is caused by the tilt of its axis as it orbits the Sun. When the Northern Hemisphere is tilted towards the Sun, it experiences summer, while the Southern Hemisphere experiences winter. When the Northern Hemisphere is tilted away from the Sun, it experiences winter, while the Southern Hemisphere experiences summer.
 4. How long does it take for the Earth to complete one revolution around the Sun?
Ans. It takes the Earth approximately 365.25 days to complete one revolution around the Sun, which is why we have a leap year every four years to account for the extra quarter of a day. This period of revolution is commonly known as a year.
 5. What is the significance of the Earth's motions?
Ans. The motions of the Earth have significant impacts on our daily lives and the environment. Rotation gives us day and night, while revolution determines the length of our year and the changing of seasons. These motions also play a crucial role in the Earth's climate, ocean currents, and the distribution of sunlight on our planet.

## Social Studies (SST) Class 6

66 videos|386 docs|80 tests

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